---
product_id: 218046034
title: "Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker"
brand: "datoo"
price: "67 zł"
currency: PLN
in_stock: true
reviews_count: 12
category: "Da Too"
url: https://www.desertcart.pl/products/218046034-mini-aquarium-heater-25w-small-fish-tank-heater-25-watt
store_origin: PL
region: Poland
---

# 0.2 inch ultra-compact size 25W precise heating power Quartz glass explosion-proof durability Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker

**Brand:** datoo
**Price:** 67 zł
**Availability:** ✅ In Stock

## Summary

> 🐠 Keep your fish cozy in style—small heater, big impact!

## Quick Answers

- **What is this?** Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker by datoo
- **How much does it cost?** 67 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/218046034-mini-aquarium-heater-25w-small-fish-tank-heater-25-watt)

## Best For

- datoo enthusiasts

## Why This Product

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

## Key Features

- • **Miniature Marvel:** Smallest 25W heater on the market, maximizing tank space for your aquatic friends.
- • **Built to Last & Safe:** Rubber-sealed, explosion-proof quartz glass ensures zero leaks and ultimate durability.
- • **Plug & Play Simplicity:** Just submerge, plug in, and relax—heater does the rest with clear red/green indicator lights.
- • **Bonus Thermometer Sticker:** Free temperature strip included for instant, hassle-free water monitoring.
- • **Effortless Perfect Temperature:** Auto-maintains ideal 78℉ for tropical fish—no settings needed.

## Overview

The DaToo Mini Aquarium Heater 25W is a compact, ultra-reliable heater designed for small tanks (1-6 gallons). It automatically maintains a constant 78℉ temperature ideal for bettas and tropical fish, featuring a durable quartz glass body with rubber sealing for safety. Its minimalist design maximizes tank space, while the included thermometer sticker and intuitive indicator lights make fish care effortless and precise.

## Description

desertcart.com : DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker : Pet Supplies

Review: This little heater is a gem, works great, priced great. - My Betta tank is in my poorly designed bedroom, heating vent at the top of the wall around the corner from the main part of the room so it is always cold in here. I was having a hard time keeping the water temperature at a good level so I ordered this little heater. Within 15 minutes of installing it, the water temperature rose to 78 degrees and is staying there. Very easy to read, when it lights red it is warming the water, when it lights green the water is at the pre-set temperature of 78 degrees so you don't have to worry about adjusting it or turning off/on. Very affordable, small so it fits into a small tank, good quality materials, comes with a temperature strip. Definitely recommend!
Review: Simple, Plug-and-Play Heater - This heater is very easy to use—no temperature settings or adjustments needed. Just place it in the tank, plug it in, and it starts working right away. It maintains a consistent preset temperature that’s suitable for tropical fish. It’s been running quietly and steadily with no issues so far. The build quality feels solid, and the indicator light makes it easy to tell when it’s heating. Perfect for anyone who wants a simple, hassle-free heater without worrying about calibration or adjustments. Great option for beginners or anyone who prefers a straightforward setup.

## Features

- 25W Betta Aquarium Heater: Creating and maintaining a perfect and comfortable water temperature for our cute fish is not easy, which requires a lot of effort. Now DaToo MINI 25W Aquarium Heater can help you make this easier. Precise and constant temperature, no need to set, keep the temperature of fish habitat in the best state at all times. You will find it very easy and happy to take care of pet fish！
- Precise And Constant Temperature: No need to set, DaToo Fish Tank Heater will automatically keep the water temperature of the fish habitat at 78℉. This temperature is very suitable for betta and most tropical fish. When the water temperature is lower than 78℉, the heater starts to heat and the red light is on. When the temperature reaches 78℉, the heater stops heating and the green light is on. DaToo will always maintain this comfortable temperature for your beloved fish!
- The Smallest 25W Betta Heater: For most fish lovers who have small fish tanks of 1 to 5 gallons, a small heater means more space for fish. This is the smallest 25W aquarium heater on the market, only 0.2 inches. No matter how small your fish tank is, it can be used perfectly in it, and you can't even find it. Very MINI!!
- Safe And Durable: Unlike traditional plastic seals, DaToo uses a rubber sealing layer, which ensures that DaToo has better sealing and safety performance, and will never leak electricity or water. Quartz glass material, explosion-proof and crack-proof, more sturdy and durable, without worrying about damage.
- One Year Warranty & Satisfaction Guarantee: This heater is ideal for 1 to 6 gallon small glass or acrylic desktop aquariums. When in use, it needs to be submerged 100% in water. We provide one year warranty and 24 hours professional customer service. Buy With Confidence!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0893T67LX |
| ASIN  | B0893T67LX |
| Age Range (Description) | Adult |
| Best Sellers Rank | #1,987 in Pet Supplies ( See Top 100 in Pet Supplies ) #3 in Aquarium Heaters |
| Brand | DaToo |
| Brand Name | DaToo |
| Color | Black |
| Customer Reviews | 4.3 4.3 out of 5 stars (5,436) |
| Date First Available | July 17, 2020 |
| Date First Available  | July 17, 2020 |
| Display Type | Digital |
| EU Spare Part Availability Duration | 1 Years |
| Immersion Depth | 0.9 Inches |
| Included Components | Free Thermometer Sticker |
| Indoor/Outdoor Usage | Indoor |
| Item Length | 4.9 Inches |
| Item Package Dimensions L x W x H | 5.47 x 2.72 x 2.36 inches |
| Item Weight | 4.6 ounces |
| Item model number | DT-25A |
| Item model number  | DT-25A |
| Lower Temperature Rating | 78 Degrees Fahrenheit |
| Manufacturer | DaToo |
| Manufacturer  | DaToo |
| Model Name | DT-25A |
| Outer Material | Plastic |
| Package Dimensions  | 5.47 x 2.72 x 2.36 inches; 4.66 ounces |
| Power Source | Corded Electric |
| Product Care Instructions | Wipe Clean |
| Reusability | Reusable |
| Size | 25W |
| Special Feature | High Accuracy |
| Style | Basic |
| Target Audience Keyword | fish |
| UPC | 745408757995 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 78 Degrees Fahrenheit |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** DaToo
- **Color:** Black
- **Display Type:** Digital
- **Included Components:** Free Thermometer Sticker
- **Outer Material:** Plastic
- **Power Source:** Corded Electric
- **Product Care Instructions:** Wipe Clean
- **Special Feature:** High Accuracy
- **Unit Count:** 1.0 Count

## Images

![Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker - Image 1](https://m.media-amazon.com/images/I/51Ck1OxACtL.jpg)
![Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker - Image 2](https://m.media-amazon.com/images/I/6176+JXjfnL.jpg)
![Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker - Image 3](https://m.media-amazon.com/images/I/61HNmBWA2CL.jpg)
![Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker - Image 4](https://m.media-amazon.com/images/I/61a68x74vOL.jpg)
![Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker - Image 5](https://m.media-amazon.com/images/I/61hv8rk2pIL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ This little heater is a gem, works great, priced great.
*by L***S on December 1, 2025*

My Betta tank is in my poorly designed bedroom, heating vent at the top of the wall around the corner from the main part of the room so it is always cold in here. I was having a hard time keeping the water temperature at a good level so I ordered this little heater. Within 15 minutes of installing it, the water temperature rose to 78 degrees and is staying there. Very easy to read, when it lights red it is warming the water, when it lights green the water is at the pre-set temperature of 78 degrees so you don't have to worry about adjusting it or turning off/on. Very affordable, small so it fits into a small tank, good quality materials, comes with a temperature strip. Definitely recommend!

### ⭐⭐⭐⭐⭐ Simple, Plug-and-Play Heater
*by Y***G on December 18, 2025*

This heater is very easy to use—no temperature settings or adjustments needed. Just place it in the tank, plug it in, and it starts working right away. It maintains a consistent preset temperature that’s suitable for tropical fish. It’s been running quietly and steadily with no issues so far. The build quality feels solid, and the indicator light makes it easy to tell when it’s heating. Perfect for anyone who wants a simple, hassle-free heater without worrying about calibration or adjustments. Great option for beginners or anyone who prefers a straightforward setup.

### ⭐⭐⭐⭐⭐ Perfect Heater for My Aquarium!
*by M***N on October 14, 2025*

I bought this heater for my 5-gallon betta tank, and it’s been amazing so far. It keeps the water temperature stable and consistent, which is super important for my fish. It’s quiet, compact, and easy to install — just plug it in and it works perfectly. I also love that the indicator light makes it easy to see when it’s heating. My betta seems much more active and happy now! Definitely recommend this heater to anyone looking for something reliable and affordable.

## Frequently Bought Together

- DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker
- Ultra Fresh Betta Fish Food, Pro Shrimp Patties, 50% Sword Prawns + Akiami Paste Shrimps, All Natural Protein, Rich in Calcium, for Betta's Healthy Development and Cleaner Water, 0.7 oz
- Tetra BettaSafe, Aquarium Water Conditioner For Bettas, 1.69-Ounce, 50ml, Golds & Yellows (16837)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-31*