---
product_id: 2119070
title: "Fluval Spec/Evo/Flex Activated Carbon, Replacement Aquarium Filter Media, 3-Pack, A1377,Black"
brand: "fluval"
price: "139 zł"
currency: PLN
in_stock: true
reviews_count: 8
category: "Fluval"
url: https://www.desertcart.pl/products/2119070-fluval-spec-evo-flex-activated-carbon-replacement-aquarium-filter-media
store_origin: PL
region: Poland
---

# Crystal clear water clarity 3-pack replacement convenience Research-grade carbon purity Fluval Spec/Evo/Flex Activated Carbon, Replacement Aquarium Filter Media, 3-Pack, A1377,Black

**Brand:** fluval
**Price:** 139 zł
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your aquarium game with crystal-clear confidence!

## Quick Answers

- **What is this?** Fluval Spec/Evo/Flex Activated Carbon, Replacement Aquarium Filter Media, 3-Pack, A1377,Black by fluval
- **How much does it cost?** 139 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/2119070-fluval-spec-evo-flex-activated-carbon-replacement-aquarium-filter-media)

## 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

- • **Instant Clarity Boost:** Clears cloudy water overnight to revive your aquatic ecosystem
- • **Maintenance Made Easy:** 3-pack inserts ensure continuous, hassle-free filter performance
- • **Maximized Surface Area:** Premium carbon granules absorb impurities faster and deeper
- • **Tailored Compatibility:** Specifically engineered for Fluval Spec, Evo & Flex aquariums
- • **Advanced Chemical Filtration:** Removes heavy metals, odors & pollutants for pristine water

## Overview

Fluval Spec/Evo/Flex Activated Carbon is a premium, research-grade chemical filter media designed exclusively for Fluval desktop aquariums. Its vast surface area granules efficiently remove heavy metals, odors, discolorations, and pollutants, delivering sparkling, crystal-clear water. Sold in convenient 3-pack replacements, it’s the go-to solution for aquarists seeking fast, reliable water clarity and healthier aquatic environments.

## Description

Specifically designed for Fluval Spec, Evo and Flex Aquariums, Fluval Spec/Evo/Flex Activated Carbon provides effective chemical filtration, removing heavy metals, odors, discolorations and pollutants from aquarium water. The research grade carbon has large amounts of surface area for the adsorption of impurities. Fluval Spec/Evo/Flex Activated Carbon effectively removes heavy metals, odors, discolorations and pollutants, leaving your aquarium water crystal clear and sparkling.For more fish tank accessories, check out other Fluval products including aquarium filters, aquarium heaters, aquarium air pumps, aquarium lights, aquarium rocks, aquarium thermometers, and aquarium stands. Fluval has a wide variety of products that are perfect for your pet fish to enjoy in any large fish tank, small fish tank, saltwater tank or freshwater tank. Fluval broke onto the aquatic scene in 1975 by introducing the world’s first 3-stage filter with synchronous motor technology – a breakthrough that is still applied in the industry today. Since then, Fluval has built a legacy around this pioneering spirit, relentlessly adapting in a changing world to launch innovative aquarium products that remain at the forefront of technology, and which set the bar in quality, style and functionality. Fluval’s mission is not just about building products that mimic the natural world, but inspiring aquarists of all skill levels to enjoy and respect the hobby for generations to come.

Review: Good filter media - Very good quality, cleared the water within an hour of adding this to my filter pump.
Review: Helped Cure Bacteria Bloom Overnight! Use for Crystal Clear Water in Fish Tank! - We decided to do a deep clean four days ago on our saltwater tank. After the clean it did not return to its previous state of crystal clear water and appeared very cloudy with white particles. We assumed that we had kicked up some funk in the sand and created a bacteria bloom. This was the first time we have encountered this, so we did our research and decided we needed to over oxygenate the water, and then add fine filtration to the system. When this first started we did a water change, and added a fresh zorb pack to help clear the tank. That with increased aeration seemed to help but was not making quick enough progress to settle our nerves. After four days of waiting for the cloudy water to clear, we decided to add these active carbon filters to the mix! After a good rinse we added these to the filter and OVER NIGHT they seemed to have completely cleared up the tank! It was a relief to wake up to clear water and happy fish! Overall the cure to the bacteria bloom seemed to be these active carbon filters, and water aeration (we added a new bubbler)! These are an affordable option that did the trick and arrived as expected! They are small, but I just used two in my filter to create full coverage. We will keep these on hand and incorporate these into our tank maintenance moving forward for crystal clear water!

## Features

- Chemical filter media removes heavy metals, odors, discolorations and pollutants
- Premium, research-grade carbon with vast surface area for effectively absorbing impurities
- Help creates crystal clear, sparkling aquarium water
- Specifically designed for use with the Fluval Spec, Evo and Flex desktop aquarium series
- Includes three replacement activated carbon inserts

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Fluval |
| Customer Reviews | 4.7 out of 5 stars 8,108 Reviews |
| Item Form | Granules |
| Item Weight | 5.82 Ounces |
| Liquid Volume | 34 Liters |
| Manufacturer | Rolf C. Hagen (USA) Corp. |
| UPC | 015561113779 |

## Product Details

- **Brand:** Fluval
- **Item Form:** Granules
- **Item Weight:** 5.82 Ounces
- **Liquid Volume:** 34 Liters
- **Manufacturer:** Rolf C. Hagen (USA) Corp.

## Images

![Fluval Spec/Evo/Flex Activated Carbon, Replacement Aquarium Filter Media, 3-Pack, A1377,Black - Image 1](https://m.media-amazon.com/images/I/61Beyt2-m2L.jpg)

## Questions & Answers

**Q: Does this fit the fluval 13.5 gallon evo?**
A: I use it with a 9 gallon fluval tank. It works.

**Q: i have Top Fin filter on my 20 gallon tank , well i really dont know where do i place this carbon  ?**
A: Carbon should be the last thing the water touches before returning to the tank with the exception of a polishing pad. This is so ammonia and nitrite can be processed by the food bacteria before the carbon leeches it out of the water. Each filter is different so look at how the water flows in your filter for best placement.

**Q: How often does the foam filter need to be replaced?**
A: For the health of your fish you should replace the mechanical filter, the foamy thing, at LEAST every 2 months. This isn’t a sweater that you wear and replace when it’s worn out. Who ever gave that advice doesn’t know their @$$ from a hole in the ground.

**Q: Is it possible to cut a third opening in the middle for an additional biomax bag?**
A: Yes you could but that would mean you would have very little mechanical filtration. There won't be enough media left to filter anything.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good filter media
*by H***. on December 1, 2025*

Very good quality, cleared the water within an hour of adding this to my filter pump.

### ⭐⭐⭐⭐⭐ Helped Cure Bacteria Bloom Overnight! Use for Crystal Clear Water in Fish Tank!
*by K***. on February 8, 2023*

We decided to do a deep clean four days ago on our saltwater tank. After the clean it did not return to its previous state of crystal clear water and appeared very cloudy with white particles. We assumed that we had kicked up some funk in the sand and created a bacteria bloom. This was the first time we have encountered this, so we did our research and decided we needed to over oxygenate the water, and then add fine filtration to the system. When this first started we did a water change, and added a fresh zorb pack to help clear the tank. That with increased aeration seemed to help but was not making quick enough progress to settle our nerves. After four days of waiting for the cloudy water to clear, we decided to add these active carbon filters to the mix! After a good rinse we added these to the filter and OVER NIGHT they seemed to have completely cleared up the tank! It was a relief to wake up to clear water and happy fish! Overall the cure to the bacteria bloom seemed to be these active carbon filters, and water aeration (we added a new bubbler)! These are an affordable option that did the trick and arrived as expected! They are small, but I just used two in my filter to create full coverage. We will keep these on hand and incorporate these into our tank maintenance moving forward for crystal clear water!

### ⭐⭐⭐⭐⭐ If the price is low, these are a great deal from a reputable brand.
*by W***S on July 4, 2025*

These carbon pouches fit in many aquarium filters, tho perhaps not the perfect factory filter pouch, they are just pouches of carbon and fish can't read. If the price is low, these are a great deal from a reputable brand.

## Frequently Bought Together

- Fluval Spec/Evo/Flex Activated Carbon, Replacement Aquarium Filter Media, 3-Pack, A1377,Black
- Fluval SPEC Biomax - 2.1 Ounces (3 Pack)
- Fluval Betta Diffusion Chamber Pad, Replacement Aquarium Filter Media

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-03-15*