---
product_id: 252884952
title: "P50 Submersible Aquarium Heater – 50W, Preset 76-78°F for Freshwater & Saltwater Tanks up to 15 Gal, Shatterproof, Fully Submersible, LED Indicator, Durable & Safe Fish Tank Heater"
brand: "fluval"
price: "€ 54.12"
currency: EUR
in_stock: true
url: https://www.desertcart.pt/products/252884952-p50-submersible-aquarium-heater-50w-preset-76-78-f-freshwater
store_origin: PT
region: Portugal
---

# Fully submersible & waterproof 50W steady power Shatterproof polymer housing P50 Submersible Aquarium Heater – 50W, Preset 76-78°F for Freshwater & Saltwater Tanks up to 15 Gal, Shatterproof, Fully Submersible, LED Indicator, Durable & Safe Fish Tank Heater

**Brand:** fluval
**Price:** € 54.12
**Availability:** ✅ In Stock

## Summary

> 🔥 Keep your tank perfectly heated, no fuss, all flair!

## Quick Answers

- **What is this?** P50 Submersible Aquarium Heater – 50W, Preset 76-78°F for Freshwater & Saltwater Tanks up to 15 Gal, Shatterproof, Fully Submersible, LED Indicator, Durable & Safe Fish Tank Heater by fluval
- **How much does it cost?** € 54.12 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/252884952-p50-submersible-aquarium-heater-50w-preset-76-78-f-freshwater)

## 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 Heat Status:** LED indicator light lets you know exactly when your heater is working.
- • **Built to Brave the Deep:** Shatterproof polymer design ensures durability and safety in every drop.
- • **Invisible Yet Indispensable:** Compact, fully submersible heater fits seamlessly in tanks up to 15 gallons.
- • **Effortless Precision Heating:** Preset 76-78°F keeps your aquatic friends cozy without any guesswork.
- • **Versatile Aquarium Essential:** Perfect for freshwater & saltwater setups, from bettas to reef tanks.

## Overview

The P50 Submersible Aquarium Heater delivers reliable 50W heating preset to 76-78°F, ideal for freshwater and saltwater tanks up to 15 gallons. Its shatterproof polymer housing and fully submersible design ensure durability and safety, while the LED indicator provides real-time heating status. Perfect for maintaining a stable, healthy environment for tropical fish and aquatic ecosystems.

## Description

Keep your aquarium water at the perfect temperature with the Fluval P50 Submersible Aquarium Heater. This 50W heater is preset to 76-78°F (24-26°C) for effortless, hands-free operation in freshwater and saltwater tanks up to 15 gallons (57L). Its shatterproof polymer housing ensures safety, while the fully submersible, waterproof design allows flexible positioning. An LED indicator light shows when it’s heating, making it easy to monitor. Reliable, durable, and easy to use!

## Features

- Preset Temperature for Hassle-Free Heating: No adjustments required! The Fluval P50 maintains a steady 76-78°F (24-26°C), creating an optimal environment for tropical fish and aquatic life
- Shatterproof & Durable Build: Designed with a strong polymer housing, this break-resistant heater keeps your aquarium and its inhabitants safe from potential damage or overheating
- Fully Submersible & Waterproof: Compact and versatile, the fully submersible design allows for easy placement in freshwater and saltwater aquariums up to 15 gallons (57L)
- LED Heating Indicator Light: A built-in LED light illuminates when the heater is actively working, so you always know when it’s maintaining the perfect water temperature
- Reliable Heating for Small & Medium Tanks: Ideal for betta tanks, shrimp habitats, planted tanks, and reef aquariums, ensuring consistent, even heat distribution for a healthy ecosystem

## Images

![P50 Submersible Aquarium Heater – 50W, Preset 76-78°F for Freshwater & Saltwater Tanks up to 15 Gal, Shatterproof, Fully Submersible, LED Indicator, Durable & Safe Fish Tank Heater - Image 1](https://images-na.ssl-images-amazon.com/images/G/01/x-locale/common/grey-pixel.gif)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: 50 watt version has hole in front cover? How big is it? Buying so baby nerite can't get into heaterto replace old heater with gaps like that**
A: if your talking about the area around the red lED its small but if worried , i would put a little dab of silicone and let dry.  then use . will tank a look and message back

**Q: The red light on mine is always on.  Is this normal or should it go off when it hits temp?  Not finding anything in the instructions.**
A: The red light always stays on. The Fluval seems to be the most reliable out of all the heaters I’ve tried. Hope this helps.

**Q: Keeps Turning off and on? Is it because maybe room temp is warm ?**
A: It has an internal thermometer. It turns off when it gets 78°

**Q: Will it auto shut off once it reaches temperature?**
A: will shut on and off . unit is preset

## Frequently Bought Together

- Fluval P50 Submersible Aquarium Heater – 50W, Preset 76-78°F for Freshwater & Saltwater Tanks up to 15 Gal, Shatterproof, Fully Submersible, LED Indicator, Durable & Safe Fish Tank 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
- API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored

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**Shop now:** [https://www.desertcart.pt/products/252884952-p50-submersible-aquarium-heater-50w-preset-76-78-f-freshwater](https://www.desertcart.pt/products/252884952-p50-submersible-aquarium-heater-50w-preset-76-78-f-freshwater)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-01-22*