---
product_id: 82370350
title: "Jager Aquarium Thermostat Heater 300W"
brand: "eheim"
price: "540.87 DT"
currency: TND
in_stock: true
reviews_count: 5
category: "Eheim"
url: https://www.desertcart.tn/products/82370350-jager-aquarium-thermostat-heater-300w
store_origin: TN
region: Tunisia
---

# 100% fully submersible ±0.5°F TruTemp recalibration Dry-run safety auto shutoff Jager Aquarium Thermostat Heater 300W

**Brand:** eheim
**Price:** 540.87 DT
**Availability:** ✅ In Stock

## Summary

> 🌊 Keep your tank’s vibe flawless with precision heat that never quits!

## Quick Answers

- **What is this?** Jager Aquarium Thermostat Heater 300W by eheim
- **How much does it cost?** 540.87 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/82370350-jager-aquarium-thermostat-heater-300w)

## Best For

- eheim enthusiasts

## Why This Product

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

## Key Features

- • **Safety First, Always:** Automatic shutoff when water levels drop protects your aquatic ecosystem from overheating risks.
- • **Effortless Monitoring:** On/Off indicator light gives you instant visual confirmation of heater status—no guesswork needed.
- • **Built to Last Underwater:** Shock-resistant, shatterproof glass ensures durability in both fresh and marine environments.
- • **Fully Submersible Freedom:** Place it anywhere in your tank with confidence—this heater thrives 100% underwater.
- • **Precision Perfect Temperature:** TruTemp dial lets you recalibrate within ±0.5°F for aquarium climate control that’s always on point.

## Overview

The Eheim Jager 300W Aquarium Thermostat Heater is a fully submersible, shock-resistant heater designed for precise temperature control with ±0.5°F recalibration. Featuring dry-run safety auto shutoff and an easy-to-read indicator light, it ensures reliable, safe heating for both fresh and marine tanks up to 180 gallons.

## Description

All 9 EHEIM Heater models are 100% fully submersible and come with a new TruTemp dial that allows the user to recalibrate the heater within a +/- 0.5F degree accurancy for precise temperature readings.

Review: Flawless operation. - Have been using on 180 gallon reef tank for 8 months now and this heater has performed flawlessly. Quality product as one would expect from a reputable company like Eheim. Only small complaint would be the very large size of this heater, make sure yiu have the room to accomodate it before purchasing. Look forward to implementing more of their products in the future.
Review: Justo lo necesario. - Buen funcionamiento, calienta muy bien y de forma segura mi acuario, sistema de seguridad indispensable, materiales de calidad, solo una cuestión. he tenido que calibrar varias veces la temperatura. pero sin duda recomendable por precio y calidad.

## Features

- Fully submersible
- Thermo safey control protects against running dry
- Will automatically turn off when water level dips too low
- TruTemp dial recalibrates the heater for precise temperature regulation
- Made of shock resistant and shatter proof glass for fresh or marine water
- On/Off indicator light for at-a-glance monitoring

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003I5UC0W |
| Batteries Included | No |
| Batteries required | No |
| Best Sellers Rank | 213,984 in Pet Supplies ( See Top 100 in Pet Supplies ) 421 in Aquarium Heaters |
| Colour | BLACK |
| Customer Reviews | 4.4 4.4 out of 5 stars (5,643) |
| Date First Available | 7 Feb. 2012 |
| Item Weight | 374 g |
| Item model number | 3619090 |
| Number of Items | 1 |
| Quantity | 1 |
| Size | 300W US |
| Specific Uses | Aquarium Temperature Control |
| Wattage | 300 watts |

## Images

![Jager Aquarium Thermostat Heater 300W - Image 1](https://m.media-amazon.com/images/I/617tBxtuJxL.jpg)
![Jager Aquarium Thermostat Heater 300W - Image 2](https://m.media-amazon.com/images/I/31DTSO8mHlL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Flawless operation.
*by T***R on 29 August 2017*

Have been using on 180 gallon reef tank for 8 months now and this heater has performed flawlessly. Quality product as one would expect from a reputable company like Eheim. Only small complaint would be the very large size of this heater, make sure yiu have the room to accomodate it before purchasing. Look forward to implementing more of their products in the future.

### ⭐⭐⭐⭐⭐ Justo lo necesario.
*by K***S on 14 December 2019*

Buen funcionamiento, calienta muy bien y de forma segura mi acuario, sistema de seguridad indispensable, materiales de calidad, solo una cuestión. he tenido que calibrar varias veces la temperatura. pero sin duda recomendable por precio y calidad.

### ⭐⭐⭐⭐⭐ A Little Bigger Than Expected But A Reliable Work Horse
*by N***L on 8 February 2013*

I ordered this heater to replace a Elite Submersible Preset Heater, 300-Watt that my catfish had broken in a fish free for all freak-out. I have used EHEIM in the past and they have never disappointed me (though I have been confused by them) so I decided to try something new. I was surprised when the specifications said a single EHEIM 300W heater could heat tanks over 100 gallons, but I like the concept of running only one unit.When I received a shipping box that was about 4 feet long, the potential abilities of the heater started to make sense.I was expecting a heater of similar dimensions to almost every 300W heater I have ever owned. EHEIM was not even in the same park. The EHEIM 300W heater is 22" in overall length, with very sturdy, heavy glass and has a thick industrial feel to the power cord. I have found the temperature setting to be the most reliable and accurate I have ever used, and I have used a lot of heaters. The added length has increased the surface area of the heating element and I have found that, so far, one EHEIM 300W unit is efficient enough to heat my 150 gallon tank on its own without it running constantly. I also appreciate that there is no noise associated with the unit switching on or off. My tank temp is very stable and I have noticed zero fluctuation of internal temperature regardless of surrounding room temperature. Let me remind you again, this heater is long. I own a a tank that is 30" tall so placement of the unit is not a problem, but I can see how placement could be difficult for anyone who has a 24" or shorter tank height. Though you could solve this issue by just tilting the heater or placing it horizontally, but in some situations I could see how the heaters size might be a problem. I was pleasantly surprised by the overall performance of the EHEIM 300W heater. It isn't the perfect heater, but I have been very pleased with it and unless something unusual happens, I will continue to rely on it for my heating needs. Pros: Price, sturdy build, greater surface area, almost perfect temp setting, stable heating, quiet Cons: Much longer length than other heaters

## Frequently Bought Together

- Eheim 3619090 Jager Aquarium Thermostat Heater 300W, Black
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- 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 Tunisia*
*Store origin: TN*
*Last updated: 2026-07-27*