---
product_id: 306601793
title: "Fluval M50 Ultra-Slim Submersible Aquarium Heater – 50W Underwater Heater for Aquariums up to 15 Gal."
brand: "fluval"
price: "€ 63.89"
currency: EUR
in_stock: false
reviews_count: 5
category: "Fluval"
url: https://www.desertcart.gr/products/306601793-fluval-m50-ultra-slim-submersible-aquarium-heater-50w-underwater-heater
store_origin: GR
region: Greece
---

# 50W precise power Reflective Borosilicate glass Ultra-slim 37.6cm profile Fluval M50 Ultra-Slim Submersible Aquarium Heater – 50W Underwater Heater for Aquariums up to 15 Gal.

**Brand:** fluval
**Price:** € 63.89
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Heat your tank, not your style! Ultra-slim, ultra-smart aquarium heating.

## Quick Answers

- **What is this?** Fluval M50 Ultra-Slim Submersible Aquarium Heater – 50W Underwater Heater for Aquariums up to 15 Gal. by fluval
- **How much does it cost?** € 63.89 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/306601793-fluval-m50-ultra-slim-submersible-aquarium-heater-50w-underwater-heater)

## 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

- • **Built to Last:** Crafted with premium Italian engineering and backed by a 3-year limited warranty for peace of mind.
- • **Sleek Powerhouse:** 50 watts of reliable, energy-efficient heating for aquariums up to 15 gallons.
- • **Invisible Elegance:** Ultra-slim design blends seamlessly into your tank, preserving your aquarium’s natural beauty.
- • **Reflective Camouflage:** Heat- and shock-resistant glass reflects surrounding colors, making the heater virtually disappear.
- • **Precision Temperature Control:** Computer-calibrated thermostat with easy dial and blue indicator light for effortless monitoring.

## Overview

The Fluval M50 Ultra-Slim Submersible Aquarium Heater delivers precise 50W heating for freshwater and saltwater tanks up to 15 gallons. Featuring a sleek, ultra-slim profile and reflective Borosilicate glass, it blends invisibly into your aquarium environment. Its computer-calibrated thermostat ensures stable temperatures between 66-86°F, while premium Italian construction guarantees durability, all backed by a 3-year warranty.

## Description

The Fluval M Submersible Aquarium Heater’s quality European manufacturing utilizes superior components and construction. The Fluval M50 Submersible Heater is ideal for use in freshwater and marine aquariums up to 15 gallons and has a temperature range of 66-86 degrees Fahrenheit. This sleek, compact heater can be trusted for exceptional performance and unsurpassed reliability. Unique only to the Fluval "M" series the reflective technology equipped in the Fluval M Submersible Aquarium Heaters helps maintain the aquariums' natural look as the heater reflects the colors of the surroundings.Fluval first broke onto the aquatic scene in 1975 by introducing the world’s first 3-stage filter with synchronous motor technology – a landmark 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. Above and beyond its manufacturing role, Fluval prides itself on its charitable and educational efforts that give back to the fishkeeping community, whether it means helping to fund the protection of wild coral reefs or jumping on a plane to document endangered fish species halfway around the world. 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: Très bon chauffage, aucun regret sur son efficacité
Review: Toller Heizstab! Kann ganz unter Wasser gesteckt werden. Schaltet ab und an den Sensor ein, um die Temperatur zu überprüfen. Seit einem Monat im Gebrauch und die Temperatur bleibt konstant. Gut verarbeitet.

## Features

- Modern Aesthetic: M-Series heaters combine modern aesthetics with reliable Italian construction. Employing an ultra-slim profile, these heaters are a welcome departure from traditional, bulkier designs.
- Reflective Design: This heater is encompassed in a heat-and-shock resistant reflective Borosilicate glass tube, which allows it to reflect the surrounding aquarium colors, allowing it to blend in with the environment and enhance overall aesthetics.
- Temperature Control: Computer-calibrated thermostat has an easy-to-adjust temperature control dial and an on/off blue indicator light to display when it’s in use.
- Slim Profile: Ultra slim design allows for easy installation in your aquarium tank.
- Recommended Size: M50 underwater heater is ideal for freshwater and saltwater aquariums up to 15 gallons. Each M-Series heater comes with a 3-year limited warranty.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0027VMPXA |
| Batteries Included | No |
| Best Sellers Rank | #33,060 in Pet Supplies ( See Top 100 in Pet Supplies ) #1,820 in Aquarium Accessories |
| Breed Recommendation | All Breed Sizes |
| Color | Silver |
| Customer Reviews | 4.4 4.4 out of 5 stars (2,320) |
| Date First Available | 7 August 2012 |
| Flavor | Flavorless |
| Item Form | Stick |
| Item Weight | 279 g |
| Item model number | M50 |
| Manufacturer recommended age | 1 month and up |
| Number of Items | 1 |
| Pet Life Stage | All Life Stages |
| Product Dimensions | 4.57 x 12.19 x 37.59 cm; 279.41 g |
| Quantity | 1 |
| Size | M50 |
| Special Features | Reflective Technology |
| Specific Uses | Aquarium Heating |
| Wattage | 50 watts |
| batteries required | No |

## Product Details

- **Brand:** Fluval
- **Material:** Borosilicate Glass
- **Product dimensions:** 46L x 122W x 376H millimeters
- **Special features:** Reflective Technology
- **Tank volume:** 15 Gallons

## Images

![Fluval M50 Ultra-Slim Submersible Aquarium Heater – 50W Underwater Heater for Aquariums up to 15 Gal. - Image 1](https://m.media-amazon.com/images/I/41NCZS2x0qL.jpg)
![Fluval M50 Ultra-Slim Submersible Aquarium Heater – 50W Underwater Heater for Aquariums up to 15 Gal. - Image 2](https://m.media-amazon.com/images/I/51WWXuBdCxL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by Y***K on 13 October 2022*

Très bon chauffage, aucun regret sur son efficacité

### ⭐⭐⭐⭐⭐ Review
*by H***I on 18 September 2020*

Toller Heizstab! Kann ganz unter Wasser gesteckt werden. Schaltet ab und an den Sensor ein, um die Temperatur zu überprüfen. Seit einem Monat im Gebrauch und die Temperatur bleibt konstant. Gut verarbeitet.

### ⭐⭐ Review
*by A***Z on 5 June 2024*

Cable is short.

## Frequently Bought Together

- Fluval M 50-Watt Submersible Heater
- PAIZOO Fish Tank Digital Thermometer Accurate LED Display to ±0.9°F Tank Thermometer Aquarium Temperature Measurement Suitable for Fish, Axolotl, Turtle or Aquatic
- Hagen Flex Freshwater Kit - Black - 15 gal

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-02-02*