---
product_id: 19523632
title: "Aqueon Aquarium Fish Tank Preset Heater For Up To 40 Gallons, 100 Watts"
brand: "aqueon"
price: "€ 49.70"
currency: EUR
in_stock: true
reviews_count: 13
category: "Aqueon"
url: https://www.desertcart.fi/products/19523632-aqueon-aquarium-fish-tank-preset-heater-for-up-to-40
store_origin: FI
region: Finland
---

# Fully submersible & shatter-resistant LED heating indicator light Preset 78°F ±1° accuracy Aqueon Aquarium Fish Tank Preset Heater For Up To 40 Gallons, 100 Watts

**Brand:** aqueon
**Price:** € 49.70
**Availability:** ✅ In Stock

## Summary

> 🌊 Keep your aquatic world perfectly cozy—no stress, just swim in style!

## Quick Answers

- **What is this?** Aqueon Aquarium Fish Tank Preset Heater For Up To 40 Gallons, 100 Watts by aqueon
- **How much does it cost?** € 49.70 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/19523632-aqueon-aquarium-fish-tank-preset-heater-for-up-to-40)

## Best For

- aqueon enthusiasts

## Why This Product

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

## Key Features

- • **Safety-First Design:** Auto shut-off prevents overheating, resetting automatically for peace of mind.
- • **Instant Visual Feedback:** LED indicator glows red when actively heating, so you’re always in the know.
- • **Built to Last Underwater:** Shatter-resistant quartz glass ensures durability in any aquatic environment.
- • **Effortless Precision Heating:** Preset to the ideal 78°F for tropical fish—no fiddling required.
- • **Seamless Aquarium Integration:** Compact size with versatile suction cups fits any tank setup up to 40 gallons.

## Overview

The Aqueon Aquarium Fish Tank Preset Heater delivers precise, preset temperature control at 78°F ±1°, ideal for tropical fish tanks up to 40 gallons. Crafted from shatter-resistant quartz glass and fully submersible, it features an automatic safety shut-off to prevent overheating and an LED indicator light to signal active heating. Compact and easy to install with suction cups, this 100-watt heater offers reliable, maintenance-free warmth, backed by a 1-year warranty and trusted by thousands of aquarium enthusiasts.

## Description

Aqueon Preset Aquarium Heaters require no adjusting! The preset temperature has been calibrated to 78°, appropriate for most tropical fish. It is fully submersible, constructed of shatter-resistant quartz glass and features an automatic safety shut-off to avoid overheating. The heaters include suction cups and can be placed vertically or horizontally within the aquarium. An LED indicator light displays red when actively heating. Available in different sizes to accommodate all aquarium sizes.Aqueon products offers a wide range of items so that you can build and maintain a healthy aquatic environment. All the essentials from fish tanks, filters, lighting, food, care, and other supplies that your pet fish needs. We make it easy for you to get your first aquarium and to grow in the hobby as you become more of a fish expert with every step you take and every new thing you learn. For those seasoned hobbyists, we are committed to aquarium product innovation so that we continue to offer products that get you excited. With the Aqueon brand, it's all about the fish.Disclaimer: Variations in room temperature may cause slight deviations in the actual water temperature.

Review: Great customer service and 1 Yr warranty upheld - Constantly running on a 20 gallon mixed reef tank for the past 11 months as a backup secondary heater and worked great. I removed my main heater to for a few hours for maintenance and let this preset heater in the tank only. I noticed the temperature drop to below 75 degrees f (almost 3+ degrees below preset of 78). Contacted Aqueon as it is still under warranty and now they are sending me a replacement unit. Great customer service, too.
Review: Accurate, Affordable - Very pleased. I’d always thought aquarium heaters would be expensive and for very serious, high-budget aquarium aficionados. I’m thrilled that I can offer a little heater to my betta! I was worried about his water becoming too cold in winter. Now I can keep his tank warm without worrying about the overall room temperature. Great buy! I don’t love the look, but once you’re used to it, it’s just part of the tank. The alternative is to heat the entire room to temperature at all times, which is just unnecessary, so the aesthetic tradeoff is worth it.

## Features

- Preset to 78 degree, accurate to plus/- 1 degree
- No adjustment required
- Shatter resistant
- Fully submersible, auto shut-off when overheats, resets when cools down
- LED light turns on when aquarium water is being heated
- Ideal for aquariums up to 30 gallons

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00P9QH5US |
| ASIN  | B00P9QH5US |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #10,293 in Pet Supplies ( See Top 100 in Pet Supplies ) #27 in Aquarium Heaters |
| Brand Name | Aqueon |
| Breed Recommendation | All Breed Sizes |
| Color | Multicolored |
| Country of Origin | China |
| Customer Reviews | 4.3 4.3 out of 5 stars (5,538) |
| Date First Available | November 5, 2014 |
| Date First Available  | November 5, 2014 |
| Department | Unisex-Adult |
| Department  | Unisex-Adult |
| Directions | Preset to 78°, accurate to +/- 1° |
| Included Components | Aqueon Aquarium Fish Tank Preset Heater For Up To 40 Gallons, 100 Watts |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 3.5 x 1.5 x 7 inches |
| Item Package Dimensions L x W x H | 6.93 x 3.39 x 1.65 inches |
| Item Weight | 8 Ounces |
| Item model number | 100106252 |
| Item model number  | 100106252 |
| Manufacturer | Central Garden & Pet |
| Manufacturer  | Central Garden & Pet |
| Manufacturer recommended age  | 1 month and up |
| Material | Plastic |
| Model Name | Preset Aquarium Heater |
| Number of Items | 1 |
| Product Dimensions  | 3.5 x 1.5 x 7 inches; 8 ounces |
| Size | 100 Watts |
| Style | Black, 100 Watts, Up to 30 Gallons |
| Target Audience Keyword | fish |
| Warranty Description | 1 Year |

## Images

![Aqueon Aquarium Fish Tank Preset Heater For Up To 40 Gallons, 100 Watts - Image 1](https://m.media-amazon.com/images/I/81vGIVg5NwL.jpg)

## Available Options

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

## Questions & Answers

**Q: Does this heater come with suction cups?  This heater came with a 29 gallon setup I won but it did not have suctions cups.**
A: Yes, it comes with 1 suction cup. Stay away from this product; spend a little bit more and buy one that has a lifetime warranty and you can set the temperature.

**Q: What’s the lifespan of this heater?**
A: Mine lasted less than 30 days, unfortunately it was a few days after the return cut off when I noticed this during my 3 week water and filter change

**Q: is this a timed heater ? I have been having having trouble with the light turning off**
A: I don't know that's it's timed. However initially it will stay at a preset of 78 but later it will start to keep temps of 75-77 depending on what size tank it's in. Also the black paint will chip off. Mine did within a couple months. Not good for Saltwater.  :)

**Q: If i use the 200 watt heater in a ten gallon tank will it be an issue?**
A: Might be a bit much. Usually 30 -55 gallon for a 200 watt

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great customer service and 1 Yr warranty upheld
*by A***R on January 6, 2026*

Constantly running on a 20 gallon mixed reef tank for the past 11 months as a backup secondary heater and worked great. I removed my main heater to for a few hours for maintenance and let this preset heater in the tank only. I noticed the temperature drop to below 75 degrees f (almost 3+ degrees below preset of 78). Contacted Aqueon as it is still under warranty and now they are sending me a replacement unit. Great customer service, too.

### ⭐⭐⭐⭐⭐ Accurate, Affordable
*by M***C on January 4, 2026*

Very pleased. I’d always thought aquarium heaters would be expensive and for very serious, high-budget aquarium aficionados. I’m thrilled that I can offer a little heater to my betta! I was worried about his water becoming too cold in winter. Now I can keep his tank warm without worrying about the overall room temperature. Great buy! I don’t love the look, but once you’re used to it, it’s just part of the tank. The alternative is to heat the entire room to temperature at all times, which is just unnecessary, so the aesthetic tradeoff is worth it.

### ⭐⭐⭐⭐⭐ Awesome product.
*by A***R on December 22, 2025*

Works excellent. Actually use it in our chicken waterer to keep it from freezing.

## Frequently Bought Together

- Aqueon Aquarium Fish Tank Preset Heater For Up To 40 Gallons, 100 Watts
- PAIZOO Fish Tank Digital Thermometer Accurate LED Display to ±0.9°F Tank Thermometer Aquarium Temperature Measurement Suitable for Fish, Axolotl, Turtle or Aquatic
- AQUANEAT LED Aquarium Light Full Spectrum for 18 Inch to 24 Inch Fish Tank Light Fresh Water

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-10*