---
product_id: 480965042
title: "Aquarium Heater 300W/500W/800W/1000W, Submersible Fish Tank Heater with Digital LED Controller and Intelligent Leaving Water Automatically Stop Heating System, for Freshwater and Saltwater"
brand: "hygger"
price: "€ 73.87"
currency: EUR
in_stock: true
reviews_count: 13
category: "Hygger"
url: https://www.desertcart.ie/products/480965042-aquarium-heater-300w-500w-800w-1000w-submersible-fish-tank-heater
store_origin: IE
region: Ireland
---

# Digital LED controller with ±1°F accuracy 500W power for 66-135 gal tanks Auto shut-off for overheating & dry-run protection Aquarium Heater 300W/500W/800W/1000W, Submersible Fish Tank Heater with Digital LED Controller and Intelligent Leaving Water Automatically Stop Heating System, for Freshwater and Saltwater

**Brand:** hygger
**Price:** € 73.87
**Availability:** ✅ In Stock

## Summary

> 🔥 Keep your aquatic ecosystem thriving with smart, safe, and sleek heating!

## Quick Answers

- **What is this?** Aquarium Heater 300W/500W/800W/1000W, Submersible Fish Tank Heater with Digital LED Controller and Intelligent Leaving Water Automatically Stop Heating System, for Freshwater and Saltwater by hygger
- **How much does it cost?** € 73.87 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/480965042-aquarium-heater-300w-500w-800w-1000w-submersible-fish-tank-heater)

## Best For

- hygger enthusiasts

## Why This Product

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

## Key Features

- • **Complete Setup & Support:** Includes controller, suction cups, bracket, and hook plus responsive customer service and a 12-month warranty for peace of mind.
- • **Robust 500W Heating Power:** Effortlessly maintain ideal temperatures in medium to large aquariums (66-135 gallons) with powerful, consistent heating.
- • **Smart Safety Auto Shut-Off:** Protect your aquatic friends with intelligent overheating and dry-water detection that instantly cuts power and alerts you.
- • **Precision Temperature Control:** Set and monitor your tank’s climate with a sharp digital LED display and ±1°F accuracy—no guesswork, just perfect comfort.
- • **Durable Explosion-Proof Design:** Crafted from quartz glass and nickel-chromium wire, this heater ensures fast, safe heating with a protective guard to prevent fish burns.

## Overview

The hygger Aquarium Heater 500W is a submersible, explosion-proof heater designed for freshwater and saltwater tanks between 66 and 135 gallons. Featuring a digital LED controller with ±1°F accuracy, it offers precise temperature management and intelligent auto shut-off protection against overheating and dry-run scenarios. Built with durable quartz glass and nickel-chromium heating elements, it ensures fast, safe, and reliable heating. The package includes all necessary accessories and a 12-month warranty, making it a trusted choice for maintaining a stable aquatic environment.

## Description

desertcart.com: hygger Aquarium Heater 300W/500W/800W/1000W, Submersible Fish Tank Heater with Digital LED Controller and Intelligent Leaving Water Automatically Stop Heating System, for Freshwater and Saltwater : Pet Supplies

Review: Rock-Solid Heater I Trust in Multiple Tanks - These heaters work faithfully day in and day out. I’ve been running one in another tank for about two years now without a single issue, which is exactly why I bought this one for a new setup in a different room. Temperature has stayed stable and accurate, and the heater does its job quietly in the background, no swings, no surprises. My fish stay comfortable, active, and stress-free, which is really the whole point. Build quality feels solid, setup is straightforward, and once it’s dialed in, it just works. I don’t worry about it, and that’s the highest compliment I can give aquarium equipment. Reliable, consistent, and dependable enough that I came back for another one.
Review: EASILY HANDLES MY 200 GALLON AQUARIUM- PERFECT TEMP- EASY - My 200 gallon aquarium loves this and so do I . 1. does an excellent job keeping the aquarium at exactly the temp i want. 2. display looks professional and sharp. 3. controls are EASY TO USE. ONE BUTTON TO SCROLL THROUGH THE TEMPS. 4. LONG cord to position where you want. 5. SUPPORT- I had some questions - I emailed the support that actually work for HYGGER and the responded the same day with REAL INFORMATION. Easily worth more than what I paid.

## Features

- 🐠500 WATTS AQUARIUM HEATER - 500W aquarium heater is suitable for 66 to 135 gallon saltwater and freshwater aquariums. The heater length is 10.8 inches, voltage 110-120V, power cord is 10.1 feet. Please select the appropriate wattage aquarium heater according to our size chart
- 🐠OVERHEATING & OUT OF WATER PROTECTION - When the water temperature exceeds 94°F or it is lower than the minimum water level, the heater will automatically cut off the power and stop heating, it will display an error code and sound an alarm until the water temperature is below 94°F or the heater is completely immersed in the water. Error code: HH-high temp; LL-low temp; AUTO shut off-out off water. Multiple protection, let you get rid of "boiled fish"!
- 🐠DIGITAL LED CONTROLLER - Temperature adjustable range: 59℉-93℉, Accuracy：±1°F. You can use the included bracket to mount the controller on the edge of the tank to adjust the temperature without reaching into the water. LED controller shows the current water temperature, preset temperature, working power and more warning sign of Low/ Hi temperature/ Auto shut off. Very easy to operate!
- 🐠EFFICIENT AND EXPLOSION PROOF - The aquarium heater is made of explosion-proof quartz glass and high-temperature resistant nickel-chromium heating wire. This results in faster water heating, safer, and more longer-lasting. The heater guard is made of high quality PC plastic to protect your fish from burns
- 🐠COMPLETE ACCESSORIES AND WARRANTY - This aquarium heater comes with accessories you need. Package includes 1 aquarium heater, 1 controller, 3 suction cups, 1 bracket and 1 hook. It offers 12 months warranty.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BF3S1LWH |
| Best Sellers Rank | #6,145 in Pet Supplies ( See Top 100 in Pet Supplies ) #11 in Aquarium Heaters |
| Brand | hygger |
| Brand Name | hygger |
| Color | black |
| Customer Reviews | 4.1 4.1 out of 5 stars (1,901) |
| Date First Available | September 13, 2022 |
| Horsepower | 500 Watts |
| Included Components | controller, heater |
| Item Dimensions LxWxH | 3 x 1.2 x 10.8 inches |
| Item Package Dimensions L x W x H | 13.82 x 4.57 x 4.41 inches |
| Item Weight | 2.2 Pounds |
| Manufacturer | hygger |
| Material | Nickel complex, Plastic, Quartz |
| Model Name | HG-043 |
| Model Year | 2022 |
| Operation Mode | Automatic |
| Package Weight | 1.05 Kilograms |
| Part Number | HG-043 |
| Power Source | Corded Electric |
| Size | 500W for 65-135 Gallon |
| Suggested Users | unisex-adult |
| Warranty Description | 1 year warranty |
| Wattage | 800 Watt-hours |

## Product Details

- **Brand:** hygger
- **Color:** black
- **Item Weight:** 2.2 Pounds
- **Material:** Nickel complex, Plastic, Quartz
- **Power Source:** Corded Electric

## Images

![Aquarium Heater 300W/500W/800W/1000W, Submersible Fish Tank Heater with Digital LED Controller and Intelligent Leaving Water Automatically Stop Heating System, for Freshwater and Saltwater - Image 1](https://m.media-amazon.com/images/I/61Unup6fpEL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Rock-Solid Heater I Trust in Multiple Tanks
*by K***T on January 24, 2026*

These heaters work faithfully day in and day out. I’ve been running one in another tank for about two years now without a single issue, which is exactly why I bought this one for a new setup in a different room. Temperature has stayed stable and accurate, and the heater does its job quietly in the background, no swings, no surprises. My fish stay comfortable, active, and stress-free, which is really the whole point. Build quality feels solid, setup is straightforward, and once it’s dialed in, it just works. I don’t worry about it, and that’s the highest compliment I can give aquarium equipment. Reliable, consistent, and dependable enough that I came back for another one.

### ⭐⭐⭐⭐⭐ EASILY HANDLES MY 200 GALLON AQUARIUM- PERFECT TEMP- EASY
*by L***S on February 3, 2026*

My 200 gallon aquarium loves this and so do I . 1. does an excellent job keeping the aquarium at exactly the temp i want. 2. display looks professional and sharp. 3. controls are EASY TO USE. ONE BUTTON TO SCROLL THROUGH THE TEMPS. 4. LONG cord to position where you want. 5. SUPPORT- I had some questions - I emailed the support that actually work for HYGGER and the responded the same day with REAL INFORMATION. Easily worth more than what I paid.

### ⭐ • Dangerous Heater Failure — Electrified Tank and Killed My Fish
*by M***. on February 23, 2026*

Extremely Dangerous Heater Failure – Killed My Fish and Put My Safety at Risk This heater catastrophically failed while fully submerged in my large trough system (as intended for normal operation). It overheated, melted internally, and began sending straight voltage through the water. This resulted in the loss of my fish and created a serious electrocution hazard that could have injured or killed me. This was NOT a case of misuse — the heater was properly installed, fully submerged, and operating in a controlled system. There was no exposure to air. The unit clearly malfunctioned. What makes this worse is the complete lack of customer support. I attempted to contact customer service multiple times and received no response. When a product fails in a way that endangers lives, the company should take immediate responsibility — silence is unacceptable. Aquarium heaters should fail safely. This one did not.

## Frequently Bought Together

- hygger Aquarium Heater 300W/500W/800W/1000W, Submersible Fish Tank Heater with Digital LED Controller and Intelligent Leaving Water Automatically Stop Heating System, for Freshwater and Saltwater
- 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 Ireland*
*Store origin: IE*
*Last updated: 2026-03-22*