---
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: "341 Lei"
currency: RON
in_stock: true
reviews_count: 13
category: "Fluval"
url: https://www.desertcart.ro/products/252884952-p50-submersible-aquarium-heater-50w-preset-76-78-f-freshwater
store_origin: RO
region: Romania
---

# Fully submersible & waterproof 50W precise 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:** 341 Lei
**Availability:** ✅ In Stock

## Summary

> 🔥 Keep your aquatic world cozy and flawless — no guesswork, just perfect warmth!

## 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?** 341 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/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

- • **Built to Last:** Shatterproof polymer design ensures durability and safety
- • **Preset Perfection:** Factory-set 76-78°F for effortless, stable aquatic comfort
- • **Instant Heat Status:** LED indicator light keeps you informed at a glance
- • **Seamless Submersion:** Compact, fully waterproof heater fits tanks up to 15 gallons
- • **Versatile Ecosystem Support:** Ideal for bettas, shrimp, planted, and reef tanks

## Overview

The Fluval P50 is a 50W submersible aquarium heater preset to maintain a stable 76-78°F temperature, ideal for freshwater and saltwater tanks up to 15 gallons. Its shatterproof polymer housing guarantees durability and safety, while the built-in LED indicator provides real-time heating status. Compact and fully waterproof, it’s perfect for small to medium aquatic ecosystems, ensuring consistent, reliable warmth for your fish and aquatic plants.

## 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!

Review: Little beta blanket - This thing works like a charm! Just plug and play. Ever since I put it in my Fishtank, my little beta fish are so happy and warm. It’s automatically controlled by the thermostat set at the factory. I was a little freaked out at first when I thought of the idea of buying something that was controlled automatically, but no boiled fish yet! They’re warm and cozy and happy. If you’re on the fence about buying this for your beta fish, look no further than this heater. Buy your little beta fish a blanket before they freeze to death. I’ve been using it for about three months now and it’s held up so far. It’s the perfect size to fit into a 3 gallon aquarium.
Review: Perfect! - This is perfect for my 3 1/2 gallon beta tank! Keeps it the perfect temperature for him. His name is Gill.

## 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08P7VCG11 |
| ASIN  | B08P7VCG11 |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #25,238 in Pet Supplies ( See Top 100 in Pet Supplies ) #77 in Aquarium Heaters |
| Brand Name | Fluval |
| Color | Black |
| Customer Reviews | 4.1 4.1 out of 5 stars (708) |
| Date First Available | December 6, 2020 |
| Date First Available  | December 6, 2020 |
| Directions | Follow individual packaging instructions. |
| Included Components | All items listed in description |
| Item Dimensions LxWxH | 1.57 x 0.79 x 6.1 inches |
| Item Package Dimensions L x W x H | 9.49 x 3.23 x 2.17 inches |
| Item Weight | 9.2 ounces |
| Item model number | A745 |
| Item model number  | A745 |
| Manufacturer | Rolf C. Hagen (USA) Corp. |
| Manufacturer  | Rolf C. Hagen (USA) Corp. |
| Model Name | Fluval P50 Submersible Aquarium Heater |
| Number of Items | 1 |
| Product Dimensions  | 1.57 x 0.79 x 6.1 inches; 9.17 ounces |
| Size | P50 |
| Specific Uses for Product | Indoor |
| Target Audience Keyword | Fish |
| Warranty Description | 2 Year Limited Warranty |

## 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://m.media-amazon.com/images/I/81xPfa1CXaL.jpg)

## 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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Little beta blanket
*by A***R on October 31, 2023*

This thing works like a charm! Just plug and play. Ever since I put it in my Fishtank, my little beta fish are so happy and warm. It’s automatically controlled by the thermostat set at the factory. I was a little freaked out at first when I thought of the idea of buying something that was controlled automatically, but no boiled fish yet! They’re warm and cozy and happy. If you’re on the fence about buying this for your beta fish, look no further than this heater. Buy your little beta fish a blanket before they freeze to death. I’ve been using it for about three months now and it’s held up so far. It’s the perfect size to fit into a 3 gallon aquarium.

### ⭐⭐⭐⭐⭐ Perfect!
*by B***P on February 12, 2025*

This is perfect for my 3 1/2 gallon beta tank! Keeps it the perfect temperature for him. His name is Gill.

### ⭐ After 3.5 years, it literally exploded and killed all my animals
*by J***. on January 11, 2025*

I was watching TV when I heard loud gurgling noises from my 10 gallon aquarium. I assumed it was my filter but it was coming from the heater. Of course this was odd. Suddenly, the water around the heater was bubbling very aggressively and then started to shoot out water. It looked like Old Faithful, boiling water shooting out of my open top aquarium, drenching the floor. After being frozen in fear for 2 seconds, I instinctively yanked out the plug and the boiling stopped. There was this weird black powdery stuff all over the surface and it stunk like burned rubber. The worst was the SMOKE coming out of the water and I was worried it would trigger the fire alarm of my building. I looked into my tank and saw my 6 rasboras swimming on their sides, darting and panicking. My 20 cherry shrimp, along with all the baby shrimp were doing the same. I knew they were all as good as dead. There's no way they could survive an underwater nuke caused by Fluval. The heater had a small hole, which I assume got cracked due to poor construction. This caused the toxins to leak out. I can't think of anything I did to have caused this. My last water change was a few days before, the heater was completely submerged, and there were no sudden temperature changes. I read somewhere that heaters should be replaced every 3-5 years. I wish there was a warning when the time was up other than having a mass extinction in my aquarium.

## 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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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-24*