---
product_id: 2129756
title: "AquaClear 70 Power Filter, Fish Tank Filter for 40- to 70-Gallon Aquariums, Black"
brand: "fluval"
price: "639 zł"
currency: PLN
in_stock: true
reviews_count: 7
url: https://www.desertcart.pl/products/2129756-aquaclear-70-power-filter-fish-tank-filter-for-40-to
store_origin: PL
region: Poland
---

# Adjustable patented flow control 7x filtration volume vs competitors 300 GPH pump output AquaClear 70 Power Filter, Fish Tank Filter for 40- to 70-Gallon Aquariums, Black

**Brand:** fluval
**Price:** 639 zł
**Availability:** ✅ In Stock

## Summary

> 🐠 Elevate your aquarium game with filtration that works as hard as you do!

## Quick Answers

- **What is this?** AquaClear 70 Power Filter, Fish Tank Filter for 40- to 70-Gallon Aquariums, Black by fluval
- **How much does it cost?** 639 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/2129756-aquaclear-70-power-filter-fish-tank-filter-for-40-to)

## Best For

- fluval enthusiasts

## Why This Product

- Trusted fluval brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Powerful 300 GPH Pump:** Delivers whisper-quiet, energy-efficient water flow for crystal-clear tanks without the noise.
- • **Effortless Maintenance:** Quick installation and easy bi-weekly cleaning keep your aquarium thriving with minimal hassle.
- • **Multi-Stage Media Basket:** Includes AquaClear Foam, Activated Carbon, and BioMax for all-in-one debris removal, toxin adsorption, and bacteria growth.
- • **7x More Filtration Volume:** Maximizes water-media contact time for superior mechanical, chemical, and biological filtration.
- • **Customizable Flow Control:** Patented system lets you tailor water output to your aquatic ecosystem’s unique needs.

## Overview

The AquaClear 70 Power Filter is a high-performance filtration system designed for 40- to 70-gallon aquariums. Featuring a powerful 300 GPH pump and up to seven times more filtration volume than comparable filters, it ensures superior mechanical, chemical, and biological water purification. Its patented adjustable flow control allows precise customization to protect delicate fish and plants, while the multi-stage media basket with AquaClear Foam, Activated Carbon, and BioMax supports a healthy, crystal-clear aquatic environment. Easy to install and maintain, this energy-efficient filter is backed by a 2-year warranty, making it a trusted choice for serious aquarists seeking reliable, long-lasting performance.

## Description

Product Description The Fluval AquaClear 70 Power Filter delivers high-performance, customizable filtration for 40- to 70-gallon aquariums. Engineered with a unique multi-stage filtration system, it provides mechanical, chemical, and biological filtration to remove debris, odors, toxins, and discoloration—creating a clean, healthy environment for freshwater fish and plants. Featuring up to seven times more filtration volume than comparable hang-on-back filters, the AquaClear 70 maximizes water contact with its premium media: AquaClear Foam, Activated Carbon, and BioMax. This ensures superior debris removal, effective toxin adsorption, and long-lasting biological stability. The filter’s energy-efficient, whisper-quiet pump keeps operating costs low, while its waterfall return gently breaks surface tension to improve oxygenation without disturbing fish. With a patented flow control feature, you can easily adjust water output to suit tank inhabitants, making it ideal for a wide variety of freshwater setups. A built-in media basket prevents bypass, ensuring water flows through every layer of filtration for maximum efficiency. Installation and maintenance are fast and simple, making the AquaClear 70 an excellent choice for aquarists seeking reliable, long-lasting filtration performance. (Packaging may vary.) desertcart.com AquaClear Power FilterThe AquaClear Power Filter represents one of the most versatile hang-on filter systems available. The five models available provide a complete selection of flow rates for the most popular sizes of aquariums. The filter’s unique design allows for up to six times more media volume and the longest water to media contact time in the industry.Superior Contact with AquaClear FilterPatented Re-filtration System Sometimes delicate fish and plants require a more gentle water flow. The patented AquaClear re-filtration system allows you to control the flow rate without compromising filtration efficiency. When the flow rate is reduced, up to 50% of the water within the filter chamber is processed multiple times.CycleGuard Multi-Stage Filtration System Provides optimal mechanical, chemical, and biological filtration. A healthy aquarium requires "beneficial" bacteria. Invisible and harmless, beneficial bacteria are essential in the removal of toxic ammonia and nitrite. With cartridge filtration systems, when you throw away the cartridge, you throw away beneficial bacteria. It can take weeks for the bacteria to re-colonize, resulting in a stressful environment.Typical Filter Media Placement:BottomAquaClear Foam Insert, which does the following: 1. Helps with debris removal and provides optimal water distribution patterns, allowing subsequent filter media to perform at full efficiency. 2. Biological filtration, due to the porous structure of foam, providing surfaces for beneficial bacteria.MiddleAquaClear Activated Carbon Filter Inserts contain 100% premium research grade carbon. Premium research grade carbon provides large amounts of surface area for adsorption of undesirable impurities.TopAquaClear BioMax Filter Inserts contain BioMax ceramic rings. The surface of BioMax is made up of a complex pore system that allows bacteria to thrive.AquaClear Power FiltersPower Filter MaintenanceFor maximum filter operation and efficiency, regular cleaning of the filter and its parts is recommended every two weeks.Always unplug the Aquaclear Power Filter prior to cleaning.First you want to remove the cover, filter basket, and discard water remaining in the filter case. Thoroughly rinse collected debris from the case, impeller cover and impeller assembly using clear lukewarm water.Then intake "U" tube and extension tube can be cleaned with a filter stem brush to remove any build-up of deposits.When all parts have been cleaned and thoroughly rinsed, reassemble filter and replace any scheduled media. Install the filter once again back on the aquarium making sure that the filter is tipped slightly forward.Then fill the AquaClear filter box with aquarium water. Finally plug the filter into an electrical outlet and the AquaClear will self-prime and begin running in a few seconds.Media ReplacementAquaClear Foam Filter Insert: Replace Foam Filter Insert every two months. AquaClear Activated Carbon Filter Insert: Replace Activated Carbon Insert every month. AquaClear BioMax Filter Insert: Replace BioMax Insert every three months.Warranty The AquaClear Power Filters are guaranteed against defects in material or workmanship under normal aquarium usages and service for as long as you own the filter. We offer a Lifetime Guarantee on all non-replaceable parts which means that the filter will be repaired or replaced at the manufactures discretion, free of charge, when the complete pump is returned with proof of purchase and postage paid. Please include $5.00 to cover shipping and handling. This warranty does not apply to any filter that has been subjected to misuse, negligence or tampering. No liability is assumed with respect to loss or damage to livestock or personal property irrespective of the cause thereof. Model AquaClear Powerhead 10 AquaClear 20 Power Filter AquaClear 30 Power Filter AquaClear 50 Power Filter AquaClear 70 Power Filter AquaClear 110 Power Filter Aquarium Capacity up to 10 US Gallons 5 to 20 US gallons 10 to 30 US gallons 20 to 50 US gallons 40 to 70 US gallons 60 to 110 US gallons Dimensions 4.5 x 2 x 4 inches 4.5 x 7 x 6.5 inches 18 4.5 x 8.2 x 6.7 inches 4 x 9 x 8 inches 6.2 x 10.7 x 8.6 inches 7.1 x 13.9 x 9.1 inches Pump Output 80 US Gal/h 100 US Gal/h 150 US Gal/h 200 US Gal/h 300 US Gal/h 500 US Gal/h AquaClear MediaAquaClear Ammonia RemoverAquaClear Ammonia RemoverAquaClear Ammonia Remover is ideal for new or heavily populated freshwater aquariums. It removes and controls harmful ammonia and nitrite. AquaClear Ammonia Remover reduces stress on fish, provides numerous bacterial attachment points, and is long lasting and reusable. It is exclusively designed for use in the AquaClear Power Filter. Aquaclear BiomaxAquaclear BiomaxThe AquaClear BioMax Filter Insert provides an optimal environment for beneficial bacteria growth. It works to reduce ammonia and nitrite levels in your tank, and it increases biological filtration efficiency by 30 percent.The AquaClear BioMax Filter Insert is made exclusively for the AquaClear 50 Power Filter.AquaClear Activated CarbonAquaClear Activated CarbonAquaClear Activated Carbon Filter Insert improves water clarity for freshwater and marine aquariums. AquaClear Activated Carbon Filter Insert provides superior adsorption qualities which eliminate odors, discoloration and impurities. The Carbon Filter supports beneficial bacterial colonies and works to remove chlorine, smoke and aerosol spray contaminants.AquaClear FoamAquaClear FoamAquaClear Foam Filter Insert provides mechanical filtration in freshwater or marine environments by trapping particles and debris. The porous construction provides numerous bacterial attachments, and in addition the AquaClear Foam Filter Insert offers powerful biological filtration.Hagen AquaClear Nylon Bag, 2-PackHagen AquaClear Nylon Bag, 2-PackThe AquaClear Filter Media Bag makes media maintenance extremely simple. The fine mesh holds small grained filter media and the bags may be used in both fresh and salt-water aquariums.AquaClear Zeo-CarbAquaClear Zeo-CarbAquaClear Zeo-Carb is a premium blend of research grade Fluval Carbon and Fluval Ammonia Remover. Working together, these highly effective media eliminate liquefied impurities.AquaClear Vibrator PumpAquaClear Vibrator PumpThe AquaClear Vibrator Pumps are a full range of technically advanced air pumps that provide reliable power for all aquarium air requirements. These "virtually silent" running air pumps will provide many years of trouble-free operation. The AquaClear Vibrator Air Pumps are a reliable source of air for air-operated items such as air stones, air-actuated ornaments, air driven protein skimmers or for adding movement or oxygen to any aquarium. Nutrafin nutrition and water treatmentsNutrafin Cycle Biological Filter SupplementNutrafin Cycle Biological Filter SupplementNutrafin Cycle Biological Aquarium Supplement features a high-concentration formula that immediately establishes a safe biological aquarium environment. Cycle goes to work fast, releasing massive amounts of beneficial bacteria that eliminate toxic ammonia and nitrites and creates a biologically well-balanced aquarium for healthy fish to thrive. Nutrafin Aqua Plus Water ConditionerNutrafin Aqua Plus Water ConditionerNutrafin Aqua Plus Tap Water Conditioner makes tap water safe for fish. It protects scales and fins, neutralizes chlorine, chloramines, and undesirable metals. Nutrafin Aqua Plus Tap Water Conditioner features a patented stress-relief function with the inclusion of pure herbal extracts.Nutrafin Waste Control Bio Aqua CleanerNutrafin Waste Control Bio Aqua CleanerNutrafin Waste Control Biological Aquarium Cleaner helps reduce aquarium maintenance by helping to reduce waste in gravel, power filters, decoration and on interior aquarium surfaces. It rapidly reduces organic waste from overfeeding, fish waste and other decaying material such as plant leaves.Nutrafin Plant Gro Iron EnrichedNutrafin Plant Gro Iron EnrichedNutrafin Plant Gro Aquatic Plant Essential Micro-Nutrients supports strong plant growth and conditioning by providing a complete chelated micro nutrient formula (except boron).Nutrafin Mini Master Test KitNutrafin Mini Master Test KitNutrafin Mini Master Test Kit contains 4 tests for freshwater aquariums. There's also a special quick reference guide and each test kit has its own instructions.Nutrafin Master Test KitNutrafin Master Test KitThe Nutrafin Master Test Kit is suitable for fresh and saltwater aquariums. It includes 10 test parameters to help make sure you are providing a proper living environment for your fish and plants including tests for: Phosphate, Calcium, Nitrate, Nitrite, Ammonia, pH High Range, pH Low Range, Carbonate Hardness, General Hardness and Iron.

Review: Aquaclear Filters Are Simply The Most Cleverly Designed HOB Filters On The Market - UPDATE: 10/15/14 I have just purchased my first Aquaclear HOB filter in more than three years. I presently own an AC 110, AC 70, AC 50 and 4 AC 20s. These are great filters because of their clever design and tremendous flexibility. I am presently using a pair of Aquaclear 20 filters for polishing the water in my planted aquaria. The filters are equipped with a mechanical filter pad and a micron filter pad, the later of which is used to remove the finer particles from the water column in these tanks. I like using the AC 20s as part time maintenance filters because they are small, very easy to clean, and do an excellent job of filtering my planted aquaria. I use an AC 50 in combination with an Eheim 2211 and Cobalt Aquatics DUO 500 in a Mr. Aqua 17.1 gallon aquarium. The DUO 500 is an internal filter, however, its primary function is as an LED UV clarifier. I downsized some of my tanks, so the AC 110 and AC 70 are no longer in use. However I keep them around as spares, since you never know when you will need an extra filter. One of the best aspects of the Aquaclear line of HOB filters is that the motors in the AC 20, AC 30, AC 50 and AC 70 are the same. The only difference is that the impeller fan is slightly larger on each subsequent model of these filters. The fan can be easily removed, and either a larger or smaller fan (depending on the AC HOB filter that you are using) can be added to meet the demands of the particular aquarium you are using. This is why AC filters are so popular; their tremendous flexibility. For example, suppose that you have a 20 gallon aquarium and are using an AC 20 that doesn't quite get the job done. You can purchase an impeller assembly for an AC 50 and then use it to replace the AC 20 impeller fan, which will give you twice the circulation that you had with the AC 20 impeller fan. As another illustration using the inverse of this situation, suppose you are using an AC 70 in a 30 gallon aquarium and find that even on its lowest setting it is still causing too much turbulence for your fishes. You can replace the AC 70 impeller fan with an AC 50 impeller fan. This will still give you the filtering capacity of the AC 70, however, without the turbulence that the AC 70 impeller caused. Earlier... My recent purchase of an Aquaclear 70 HOB (hang on back of tank filter) filter ill make this my 8Th Aquaclear. I have five Aquaclear 20's - three on guppy tanks, and two kept as spares in the event of a breakdown. However, in over a year of constant service, I have yet to have an Aquaclear HOB filter's electric motor burn out. Moreover, one must take care to turn these filters off when you are using a sand substrate which is being stirred up in the tank, since the sand can get into the motor and cause it to run roughly, or seize up. Even if this happens, all it usually takes to get these motors running again is to remove them from the filter housing, remove the impeller from the housing on the motor and clean the unit with water and a q-tip. Once you have done so, the motor will usually begin to run properly again. However, once sand gets sucked into these motors, it mars the finish of the impeller, which can cause it to make noise. I also own an Aquaclear 50 which I now keep on my 10 gallon tank, and an Aquaclear 110 which I use to filter a heavily planted 20 long tank with about 16 fish. So the extra filtering capability of the Aquaclear 110 is nice to have. As for the Aquaclear 70, this will be replacing the Aquaclear 50 which I used to filter my 37 gallon tank, and have now moved to my 10 gallon. The Aquaclear 70 will be used in conjunction with a Fluval 305 canister filter for redundant filtration. The Fluval 305, like the Aquaclear, is another Hagen product. It seems like virtually every product that is sold for the aquarist is manufactured by a subsidiary of Hagen's. The 305 is also a very cleverly designed filter, which works quite well, and is very easy to maintain, thanks to Fluval's patented Aquastop feature; the Aquastop fitting allows you to disconnect the 305 from its tubing without losing suction, so that you don't have to reprime the unit once you've dumped the water from its container during a filter cleaning. All you do is reconnect the Aquastop fitting to the top of the 305's canister, and then open the flow valve until the 305 fills with water. You must open the valve partially to avoid creating a tremendous amount of turbulance in your aquarium, since if you open it all the way while filling the 305, the air bubbles will race out of the 305's exhaust tube disturbing your fish. As for the controvery between which canister is best, many people who consider the purchase of a Fluval also consider buying an Eheim, and there are those who own both. The Eheim - Fluval debate reminds this author of the Chevy-Ford controversy, regarding the merits of each. Moreover, I have owned both and find that Fluval and Eheim both make excellent canister filters. However, the Fluval's internal setup is much easier to use, given the trays Fluval includes to add filter media to, while the Eheim Classic series (I'm not certain if the other Eheim filters are the same way) just stack the media atop one another, making for a more complex arrangement, since the Eheim's filter media is in not in a tray. Both filters are well made and reliable. However, one must take care to re-lubricate the Fluval's o-ring after each cleaning to ensure that it does not dry out, since this will prevent the unit from leaking onto your floor. And careful removal of the impeller housing will ensure that the impeller that does not get damaged. After more than a year with the Aquaclear series of filters, as well as the several months with a Fluval 305, I must say that I am very pleased with these units. They are cleverly designed, well constructed, and should last for years provided that they are properly maintained. Jim
Review: Good filter but..... - Good filter and does what it is intended to do. I always use a larger filter than what is recommended for the size of my tank. As a starter tank for my daughter we got her a 20 gal tank package that came with a cartridge type HOB filter. The cartridge type filter becomes overwhelmed very quickly and will not last the recommended 30 days. After about two weeks with an under populated tank we noticed the water clarity going down. After a few hours of running this filter before a water change the water quality improved significantly. Only complaint with this filer is that it came very scuffed up on the housing of the filter and extremely dirty. The lid is warped and doesn't fit right otherwise it would be a 4 star. Filter is functional and fairly quiet and has a water flow adjustment. It does not come with the water intake pre-filter as the images suggest. I did not find the motor to be noisy as other posts suggested or at least not noisy enough to complain about and quieter than the last filter which we purchased from Petsmart. UPDATE!!!! - 6/14/2025 - as mentioned above the lid on my product was warped and does not fit right. After about 1 week of running this AC70 filter, water was pooling around the tank. The filter was leaking water where the motor connects to the housing. I tried to tighten it and reseat the motor, no luck and the leak continues. In the pictures you can see where the minerals are drying where the water drips from. desertcart is replacing this product so I hope the next product functions correctly. By the way the majority of the images for this product are of the Fluval AC70 and not of this product which is made by Fluval but of cheaper quality. If the new one has problems Ill return it as well and spend more for the actual Fluval. UPDATE PART 2 -6/17/2025 - New (replacement) product arrived from desertcart and it was in much better condition than the previous product. It was not all dirty and the filter housing was glossy and not scratched like it had been used. I promptly changed out the old filter for the new one and overnight there does not appear to be any leaking. In the removeable motor housing there is an "O" ring that helps create a water tight seal. It is possible that on the old filter that it too could have been damaged or old. Not sure if this was a quality control issue or if these were from different manufacturing sites because even the durability of the plastic housing and lid seemed better. Initially I gave this product 3 stars due to the damage to a new product. Since the product is now functional and looks like a new product and does exactly what it is supposed to do I upped to 5 stars. On a side note I would highly recommend the the intake filter that does not come with this product but is a very cheap item. I thought it was just for larger particulate matter but when I was replacing the filter I removed the intake filter to use it again. I brushed off the larger visible particles and decided to give it a quick rinse. When I rinsed it I notice that it collected a lot of fine particulate matter and had to rinse it about 3-4 times before it ran clean. Also after about a week of the old filter running the white foam filter showed almost not dirt or discoloration. When I rinsed that filter it showed no dirty run off. Conclusion - intake pre-filter is a good investment!

## Features

- Aquarium filtration system that offers superior contact time with filter media and energy efficient pump lowers operating costs
- Quick and easy installation; we recommend that you clean aquarium filter every 2 weeks for maximum operation and efficiency
- Provides optimal mechanical; chemical; and biological filtration
- Comes equipped with AquaClear Foam; Activated Carbon Filter and BioMax and Cycle Guard for superior water quality
- Filtration volume is up to 7 times larger than comparable fish tank filters

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000260FUW |
| ASIN  | B000260FUW |
| Allergen Information | Nut Free |
| Best Sellers Rank | #81,917 in Pet Supplies ( See Top 100 in Pet Supplies ) #389 in Aquarium Filters |
| Brand Name | Fluval |
| Customer Reviews | 4.4 4.4 out of 5 stars (4,901) |
| Date First Available  | June 20, 2004 |
| Global Trade Identification Number | 00015561106153 |
| Included Components | Filter |
| Is Discontinued By Manufacturer  | No |
| Item Form | Power |
| Item Type Name | Hagen Aquaclear Power Filter - 70 |
| Item Weight | 1.17 Kilograms |
| Item model number  | A615A1 |
| Manufacturer | Rolf C. Hagen (USA) Corp. |
| Manufacturer  | Rolf C. Hagen (USA) Corp. |
| Manufacturer Part Number | A615 |
| Model Number | A615A1 |
| Product Dimensions  | 11.5 x 9 x 6.5 inches; 2.58 Pounds |
| Target Species | Fish |
| UPC | 015561106153 |
| Unit Count | 1 Count |
| Warranty Description | 2 years; The AquaClear® Power Filter is unconditionally guaranteed for defects in material and workmanship for a period of two years from date of purchase. This guarantee is valid only under normal operating conditions for which the Power Filter is intended. This guarantee will not apply to any unit subjected to improper use, negligence or tampering. This guarantee does not include responsibility … |

## Product Details

- **Brand:** Fluval
- **Item Form:** Power
- **Item Weight:** 1.17 Kilograms
- **Manufacturer:** Rolf C. Hagen (USA) Corp.
- **UPC:** 015561106153

## Images

![AquaClear 70 Power Filter, Fish Tank Filter for 40- to 70-Gallon Aquariums, Black - Image 1](https://m.media-amazon.com/images/I/81b8msvQXrL.jpg)

## Questions & Answers

**Q: Would the 110 be overkill for a 36 gal goldfish tank? Would the 100 work just as well?**
A: I run (2) 110's on a 90 gallon tank of exotic goldfish. That means I'm running 1000 gallons an hour through the filters on high. I've raised exotic goldfish for 50 years - goldfish are the DIRTIEST fish there are. They produce more ammonia than any other fish. These filters work great. I have some mini's - now called the 20's - which I have had for 35 + years, and they still run as well as the day I bought them. I ONLY USE AquaClear. Best filter out there! They last forever because there are no moving parts to break. There is only a magnetic impeller. In 50 years, I've only had to replace one intake tube that broke, and it was my fault! I tried a canister filter once, and quickly went back to my Hagen AquaClears. Easier to use, and as big as they are, you can use any kind of media in them that you want to use. You cannot go overkill on filtration for goldfish.

**Q: do you need to replace the filter media in time, and if so, how expensive is the whole kit**
A: I ditched the carbon early on, never clean the ceramic donut things and clean the sponge once every 6 months.  Have had it 2 years with zero issues and a very stable tank for fancy goldfish.   Love this filter.  Less maintenance and less noise than others.  I actually came here to purchase a second one for my tank to replace my old hang on the back filter.   So I will have two of these 60-110 gallon filters on my 55 gallon tank.   Sounds over kill but it’s not for them dirty goldfish lol.

**Q: Will the 110 fit on over the 1-1/4" tank edge of my 70 gal tank?**
A: 13 1/2"L X 6 3/4"W X 9"H with 4" of its width behind the tank.

**Q: How many Gallons of water per hour (GPH) does this filter handle?**
A: I am not sure, but I know it turns it over at least once per hour.  I can tell you I use it in a 100 gallon turtle tank (turtles are notoriously dirty) that is about 2/3 full.  It keeps the water sparkling clean and free of all debris all the time.  The water NEVER looks dirty.  I do clean the media and vacuum the tank once every 1 - 1 1/2 weeks, but I have been extremely pleased with this filter.  If it ever breaks, I will definitely get another.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Aquaclear Filters Are Simply The Most Cleverly Designed HOB Filters On The Market
*by J***S on March 17, 2011*

UPDATE: 10/15/14 I have just purchased my first Aquaclear HOB filter in more than three years. I presently own an AC 110, AC 70, AC 50 and 4 AC 20s. These are great filters because of their clever design and tremendous flexibility. I am presently using a pair of Aquaclear 20 filters for polishing the water in my planted aquaria. The filters are equipped with a mechanical filter pad and a micron filter pad, the later of which is used to remove the finer particles from the water column in these tanks. I like using the AC 20s as part time maintenance filters because they are small, very easy to clean, and do an excellent job of filtering my planted aquaria. I use an AC 50 in combination with an Eheim 2211 and Cobalt Aquatics DUO 500 in a Mr. Aqua 17.1 gallon aquarium. The DUO 500 is an internal filter, however, its primary function is as an LED UV clarifier. I downsized some of my tanks, so the AC 110 and AC 70 are no longer in use. However I keep them around as spares, since you never know when you will need an extra filter. One of the best aspects of the Aquaclear line of HOB filters is that the motors in the AC 20, AC 30, AC 50 and AC 70 are the same. The only difference is that the impeller fan is slightly larger on each subsequent model of these filters. The fan can be easily removed, and either a larger or smaller fan (depending on the AC HOB filter that you are using) can be added to meet the demands of the particular aquarium you are using. This is why AC filters are so popular; their tremendous flexibility. For example, suppose that you have a 20 gallon aquarium and are using an AC 20 that doesn't quite get the job done. You can purchase an impeller assembly for an AC 50 and then use it to replace the AC 20 impeller fan, which will give you twice the circulation that you had with the AC 20 impeller fan. As another illustration using the inverse of this situation, suppose you are using an AC 70 in a 30 gallon aquarium and find that even on its lowest setting it is still causing too much turbulence for your fishes. You can replace the AC 70 impeller fan with an AC 50 impeller fan. This will still give you the filtering capacity of the AC 70, however, without the turbulence that the AC 70 impeller caused. Earlier... My recent purchase of an Aquaclear 70 HOB (hang on back of tank filter) filter ill make this my 8Th Aquaclear. I have five Aquaclear 20's - three on guppy tanks, and two kept as spares in the event of a breakdown. However, in over a year of constant service, I have yet to have an Aquaclear HOB filter's electric motor burn out. Moreover, one must take care to turn these filters off when you are using a sand substrate which is being stirred up in the tank, since the sand can get into the motor and cause it to run roughly, or seize up. Even if this happens, all it usually takes to get these motors running again is to remove them from the filter housing, remove the impeller from the housing on the motor and clean the unit with water and a q-tip. Once you have done so, the motor will usually begin to run properly again. However, once sand gets sucked into these motors, it mars the finish of the impeller, which can cause it to make noise. I also own an Aquaclear 50 which I now keep on my 10 gallon tank, and an Aquaclear 110 which I use to filter a heavily planted 20 long tank with about 16 fish. So the extra filtering capability of the Aquaclear 110 is nice to have. As for the Aquaclear 70, this will be replacing the Aquaclear 50 which I used to filter my 37 gallon tank, and have now moved to my 10 gallon. The Aquaclear 70 will be used in conjunction with a Fluval 305 canister filter for redundant filtration. The Fluval 305, like the Aquaclear, is another Hagen product. It seems like virtually every product that is sold for the aquarist is manufactured by a subsidiary of Hagen's. The 305 is also a very cleverly designed filter, which works quite well, and is very easy to maintain, thanks to Fluval's patented Aquastop feature; the Aquastop fitting allows you to disconnect the 305 from its tubing without losing suction, so that you don't have to reprime the unit once you've dumped the water from its container during a filter cleaning. All you do is reconnect the Aquastop fitting to the top of the 305's canister, and then open the flow valve until the 305 fills with water. You must open the valve partially to avoid creating a tremendous amount of turbulance in your aquarium, since if you open it all the way while filling the 305, the air bubbles will race out of the 305's exhaust tube disturbing your fish. As for the controvery between which canister is best, many people who consider the purchase of a Fluval also consider buying an Eheim, and there are those who own both. The Eheim - Fluval debate reminds this author of the Chevy-Ford controversy, regarding the merits of each. Moreover, I have owned both and find that Fluval and Eheim both make excellent canister filters. However, the Fluval's internal setup is much easier to use, given the trays Fluval includes to add filter media to, while the Eheim Classic series (I'm not certain if the other Eheim filters are the same way) just stack the media atop one another, making for a more complex arrangement, since the Eheim's filter media is in not in a tray. Both filters are well made and reliable. However, one must take care to re-lubricate the Fluval's o-ring after each cleaning to ensure that it does not dry out, since this will prevent the unit from leaking onto your floor. And careful removal of the impeller housing will ensure that the impeller that does not get damaged. After more than a year with the Aquaclear series of filters, as well as the several months with a Fluval 305, I must say that I am very pleased with these units. They are cleverly designed, well constructed, and should last for years provided that they are properly maintained. Jim

### ⭐⭐⭐⭐⭐ Good filter but.....
*by J***R on June 9, 2025*

Good filter and does what it is intended to do. I always use a larger filter than what is recommended for the size of my tank. As a starter tank for my daughter we got her a 20 gal tank package that came with a cartridge type HOB filter. The cartridge type filter becomes overwhelmed very quickly and will not last the recommended 30 days. After about two weeks with an under populated tank we noticed the water clarity going down. After a few hours of running this filter before a water change the water quality improved significantly. Only complaint with this filer is that it came very scuffed up on the housing of the filter and extremely dirty. The lid is warped and doesn't fit right otherwise it would be a 4 star. Filter is functional and fairly quiet and has a water flow adjustment. It does not come with the water intake pre-filter as the images suggest. I did not find the motor to be noisy as other posts suggested or at least not noisy enough to complain about and quieter than the last filter which we purchased from Petsmart. UPDATE!!!! - 6/14/2025 - as mentioned above the lid on my product was warped and does not fit right. After about 1 week of running this AC70 filter, water was pooling around the tank. The filter was leaking water where the motor connects to the housing. I tried to tighten it and reseat the motor, no luck and the leak continues. In the pictures you can see where the minerals are drying where the water drips from. Amazon is replacing this product so I hope the next product functions correctly. By the way the majority of the images for this product are of the Fluval AC70 and not of this product which is made by Fluval but of cheaper quality. If the new one has problems Ill return it as well and spend more for the actual Fluval. UPDATE PART 2 -6/17/2025 - New (replacement) product arrived from Amazon and it was in much better condition than the previous product. It was not all dirty and the filter housing was glossy and not scratched like it had been used. I promptly changed out the old filter for the new one and overnight there does not appear to be any leaking. In the removeable motor housing there is an "O" ring that helps create a water tight seal. It is possible that on the old filter that it too could have been damaged or old. Not sure if this was a quality control issue or if these were from different manufacturing sites because even the durability of the plastic housing and lid seemed better. Initially I gave this product 3 stars due to the damage to a new product. Since the product is now functional and looks like a new product and does exactly what it is supposed to do I upped to 5 stars. On a side note I would highly recommend the the intake filter that does not come with this product but is a very cheap item. I thought it was just for larger particulate matter but when I was replacing the filter I removed the intake filter to use it again. I brushed off the larger visible particles and decided to give it a quick rinse. When I rinsed it I notice that it collected a lot of fine particulate matter and had to rinse it about 3-4 times before it ran clean. Also after about a week of the old filter running the white foam filter showed almost not dirt or discoloration. When I rinsed that filter it showed no dirty run off. Conclusion - intake pre-filter is a good investment!

### ⭐⭐⭐⭐⭐ Review
*by M***K on May 17, 2020*

molto bellissima!!

## Frequently Bought Together

- AquaClear 70 Power Filter, Fish Tank Filter for 40- to 70-Gallon Aquariums, Black
- Aqua Clear AquaClear Foam Filter Inserts, 3 Pack – Replacement Mechanical and Biological Filter Media for 70 Gallon Tanks
- beaufan 4 Set of Three-Stage Filtration Tank Filter Maintenance Kit, Replacement for AquaClear 70 Power Filter, Fish Tank Filter for 40- to 70-Gallon Aquariums

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-05-04*