---
product_id: 215897741
title: "Fluval P25 Submersible Aquarium Heater – 25W, Shatterproof & Fully Submersible, Preset 76-78°F for Freshwater & Saltwater Tanks up to 6 Gal, LED Indicator, Safe & Durable Nano Tank Heater"
price: "862572₫"
currency: VND
in_stock: false
reviews_count: 8
url: https://www.desertcart.vn/products/215897741-fluval-p25-submersible-aquarium-heater-25w-shatterproof-and-fully-submersible
store_origin: VN
region: Vietnam
---

# fully submersible & waterproof 25W stable heating shatterproof polymer build Fluval P25 Submersible Aquarium Heater – 25W, Shatterproof & Fully Submersible, Preset 76-78°F for Freshwater & Saltwater Tanks up to 6 Gal, LED Indicator, Safe & Durable Nano Tank Heater

**Price:** 862572₫
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Keep your nano aquatic world cozy and flawless—because your fish deserve the best!

## Quick Answers

- **What is this?** Fluval P25 Submersible Aquarium Heater – 25W, Shatterproof & Fully Submersible, Preset 76-78°F for Freshwater & Saltwater Tanks up to 6 Gal, LED Indicator, Safe & Durable Nano Tank Heater
- **How much does it cost?** 862572₫ with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/215897741-fluval-p25-submersible-aquarium-heater-25w-shatterproof-and-fully-submersible)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Instant Heat Status:** LED indicator lets you know exactly when your heater is working—no guesswork needed.
- • **Plug & Play Precision:** Preset 76-78°F ensures hassle-free, ideal tropical tank temps right out of the box.
- • **Invisible Yet Powerful:** Compact, fully submersible design fits discreetly in tanks up to 6 gallons without clutter.
- • **Versatile Nano Tank Essential:** Perfect for bettas, shrimp, and nano reefs in both freshwater and saltwater setups.
- • **Built to Last, Built for Safety:** Shatterproof polymer casing protects your aquatic friends and your investment.

## Overview

The Fluval P25 is a 25W submersible aquarium heater preset to maintain a stable 76-78°F, ideal for freshwater and saltwater tanks up to 6 gallons. Its shatterproof polymer construction ensures durability and safety, while the waterproof design allows flexible placement. An LED indicator provides real-time heating status, making it a reliable, low-maintenance solution for nano aquariums.

## Description

Keep your small aquarium at the perfect temperature with the P25 Submersible Aquarium Heater. This 25W heater is pre-set to 76-78°F (24-26°C) for effortless, worry-free use in nano aquariums. Built with a shatterproof polymer exterior, it ensures safety and durability for both freshwater and saltwater tanks up to 6 gallons (25L). Its fully submersible, waterproof design allows flexible placement, while the LED indicator shows when it's actively heating.

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 Easy Use: No adjustments needed! The P25 heater maintains a stable 76-78°F (24-26°C), providing an ideal environment for tropical fish in nano aquariums
- Shatterproof & Durable Build: Strong polymer construction resists damage, keeping both your aquarium and aquatic life safe from potential breakage or overheating
- Fully Submersible & Waterproof: Designed for effortless positioning, this compact heater fits discreetly inside any freshwater or saltwater tank up to 6 gallons (25L)
- LED Indicator for Active Heating: The built-in LED light illuminates when the heater is in operation, so you always know when it's working to maintain a consistent water temperature
- Reliable Heating for Small Tanks: Perfect for betta tanks, nano reefs, shrimp habitats, and planted aquariums, ensuring stable, uniform heating in both freshwater and saltwater setups

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Customer Reviews | 4.1 out of 5 stars 709 Reviews |

## Images

![Fluval P25 Submersible Aquarium Heater – 25W, Shatterproof & Fully Submersible, Preset 76-78°F for Freshwater & Saltwater Tanks up to 6 Gal, LED Indicator, Safe & Durable Nano Tank Heater - Image 1](https://m.media-amazon.com/images/I/61p90wDaxML.jpg)

## Available Options

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

## 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.

### ⭐⭐⭐⭐⭐ Fluval P10
*by M***T on June 15, 2025*

Works perfect in the spec 3

## Frequently Bought Together

- Fluval P25 Submersible Aquarium Heater for Up to 6 Gallons, 25 Watts
- Fluval SPEC Aquarium Kit, Aquarium with LED Lighting and 3-Stage Filtration System, 5-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

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-04*