--- product_id: 82370350 title: "Eheim Jager Aquarium Thermostat Heater 300W" brand: "eheim" price: "518.88 DT" currency: TND in_stock: true reviews_count: 5 category: "Eheim" url: https://www.desertcart.tn/products/82370350-eheim-jager-aquarium-thermostat-heater-300w store_origin: TN region: Tunisia --- # 100% fully submersible ±0.5°F TruTemp recalibration Dry-run safety auto shutoff Eheim Jager Aquarium Thermostat Heater 300W **Brand:** eheim **Price:** 518.88 DT **Availability:** ✅ In Stock ## Summary > 🌊 Keep your tank’s vibe flawless with precision heat that never quits! ## Quick Answers - **What is this?** Eheim Jager Aquarium Thermostat Heater 300W by eheim - **How much does it cost?** 518.88 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-eheim-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: Very pleased - Works great. I read some reviews on this item sometimes being finicky getting the temp dialed in properly, but this wasn't the case for me. It went to exactly the temp I set it for on the first try. It's been in use for at least a few weeks now. So far so good. Great price too compared with similar heaters in pet stores. 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 ![Eheim Jager Aquarium Thermostat Heater 300W - Image 1](https://m.media-amazon.com/images/I/617tBxtuJxL.jpg) ![Eheim Jager Aquarium Thermostat Heater 300W - Image 2](https://m.media-amazon.com/images/I/31DTSO8mHlL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very pleased *by D***I on 23 March 2019* Works great. I read some reviews on this item sometimes being finicky getting the temp dialed in properly, but this wasn't the case for me. It went to exactly the temp I set it for on the first try. It's been in use for at least a few weeks now. So far so good. Great price too compared with similar heaters in pet stores. ### ⭐⭐⭐⭐⭐ 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 - Inkbird Freshwater Saltwater Aquarium Heater with Probe Thermostat and Thermometer Tropical Fish/Ornamental Shrimp/Reef Tanks 24 Hours Double Time with Day Night Automatic Temperature Controller - PAIZOO Fish Tank Digital Thermometer Accurate LED Display to ±0.9°F Tank Thermometer Aquarium Temperature Measurement Suitable for Fish, Axolotl, Turtle or Aquatic --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/82370350-eheim-jager-aquarium-thermostat-heater-300w](https://www.desertcart.tn/products/82370350-eheim-jager-aquarium-thermostat-heater-300w) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-30*