---
product_id: 753842592
title: "Tetra 26447 Submersible Aquarium Heater, 50-Watt by Tetra"
brand: "tetra"
price: "€ 4.71"
currency: EUR
in_stock: false
url: https://www.desertcart.ie/products/753842592-tetra-26447-submersible-aquarium-heater-50-watt-by-tetra
store_origin: IE
region: Ireland
---

# Fully submersible design Dual indicator lights for status 50-Watt powerful heating Tetra 26447 Submersible Aquarium Heater, 50-Watt by Tetra

**Brand:** tetra
**Price:** € 4.71
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Keep your aquatic friends cozy with precision and style!

## Quick Answers

- **What is this?** Tetra 26447 Submersible Aquarium Heater, 50-Watt by Tetra by tetra
- **How much does it cost?** € 4.71 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/753842592-tetra-26447-submersible-aquarium-heater-50-watt-by-tetra)

## Best For

- tetra enthusiasts

## Why This Product

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

## Key Features

- • **Safe & Ready:** Submersible right out of the box—just place in water before plugging in for worry-free use.
- • **Compact & Concealable:** Slim design fits aquariums 2-10 gallons, easily hidden behind plants or décor.
- • **Flexible Installation:** Can be mounted vertically or horizontally to suit your tank setup perfectly.
- • **Visual Heating Status:** Red and green indicator lights keep you informed at a glance—no guesswork needed.
- • **Precision Temperature Control:** Built-in electronic thermostat maintains ideal 78°F for tropical fish effortlessly.

## Overview

The Tetra 26447 Submersible Aquarium Heater is a 50-watt, fully submersible heater designed for 2 to 10-gallon tanks. Featuring a built-in electronic thermostat that automatically maintains a stable 78°F, it ensures optimal conditions for tropical fish. Dual indicator lights provide clear heating status, while its compact size allows discreet placement. Easy to install vertically or horizontally, this heater offers reliable, safe temperature control for your aquarium.

## Description

All Tetra HT heaters have indicator lights to let you know when the heater is on. It will be red when heating and green when the proper temperature has been reached. ; The GW-HT10 uses a built in electronic theromstat to automatically maintain water at 78 Zodiac Two – F which is ideal for most tropical fish. No Non-Touch-Auto-Adjustment is requried. ; Ideal for aquariums between 2 to 10 gallons with hoods or glass canopies; the HT heater is fully submersbile and can be installed vertically or horizontally. It's small footprint makes it easy to conceal behind plants or other d Muerte D24 xu cor. ; Please read all label information upon delivery. Do not plug the heater into an electrical outlet until it is placed inside the aquarium.

## Features

- Tetra 26447 Submersible Aquarium Heater, 50 – Watt
- 50 – Watt

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Tetra |
| Item Weight | 222 g |
| Volume | 1 Milliliters |
| Product Dimensions | 13.34 x 4.11 x 8.89 cm; 222.26 g |
| Package Weight | 0.23 Kilograms |
| Batteries Required | No |
| Batteries Included | No |

## Images

![Tetra 26447 Submersible Aquarium Heater, 50-Watt by Tetra - Image 1](https://m.media-amazon.com/images/I/71CH35bZjVL.jpg)
![Tetra 26447 Submersible Aquarium Heater, 50-Watt by Tetra - Image 2](https://m.media-amazon.com/images/I/81zeKALepDL.jpg)
![Tetra 26447 Submersible Aquarium Heater, 50-Watt by Tetra - Image 3](https://m.media-amazon.com/images/I/71NRbk83Y-L.jpg)
![Tetra 26447 Submersible Aquarium Heater, 50-Watt by Tetra - Image 4](https://m.media-amazon.com/images/I/61IvRyE83GL.jpg)
![Tetra 26447 Submersible Aquarium Heater, 50-Watt by Tetra - Image 5](https://m.media-amazon.com/images/I/61fJ4zrsYaL.jpg)

## Questions & Answers

**Q: would this work in a one gallon tank?**
A: I wouldnt because the temp on this can go up to 79 degrees in a 10 gallon tank, for that reason i purchased a 10 watt for my 1 gallon tank and it keeps the tank at a perfect temp of 78. Check out the Marina C10 Submersible on Amazon for $10.00.

**Q: Description says "the ht30 is adjustable between 72 degrees f and 85 degrees f". ok, why does the one i received say not adjustable, preset at 78?**
A: All of the HT Heaters are preset now.  Unfortunately, this is an old image and old description of the former HT 55. The description seems to have been translated to the HT 100 as well. Tetra is working to correct these issues immediately. We appreciate your bringing it to our attention.  If you need any other assistance, please contact the Tetra Consumer Relations Team at 1-800-526-0650.

**Q: Will this be okay in a 3 gallon betta bowl i'm making? if not any recomendations?**
A: Yea i think so. I seriously look at this every day and im sooooooooooo glad i bought it. My betta looked so depressed before in his bowl because my house gets down to 60 degrees and his water was getting cold and now he is so happy his water stays 78 and he swims like a happy fish and has a lot of  bubbles on top (means there happy). Its so crazy that warmer* water can make a fish soooo happy. This is a must. Yes buy it for a 3 gallon tank- i think it will work just fine and your fish will LOVE IT i promise! Let me know how it works out for you- because im so glad i got it!

**Q: Does it turns off automatically**
A: When it reaches the right temp. it automatically shuts off. When the light on it is green, it's heating; when the light is red, it's off

## Frequently Bought Together

- Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt, 2-10 Gallon
- PAIZOO Fish Tank Digital Thermometer Accurate LED Display to ±0.9°F Tank Thermometer Aquarium Temperature Measurement Suitable for Fish, Axolotl, Turtle or Aquatic
- Tetra Water Cleaner Gravel Siphon for Aquariums, Easily Clean Freshwater Aquariums

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-07*