--- product_id: 331443452 title: "E Heater 300W" brand: "fluval" price: "€ 86.91" currency: EUR in_stock: true reviews_count: 6 category: "Fluval" url: https://www.desertcart.nl/products/331443452-e-heater-300w store_origin: NL region: Netherlands --- # 300W fast heat tech Dual temp sensors for precision Integrated fish guard safety E Heater 300W **Brand:** fluval **Price:** € 86.91 **Availability:** βœ… In Stock ## Summary > 🌊 Heat up your aquarium game with precision and safety! ## Quick Answers - **What is this?** E Heater 300W by fluval - **How much does it cost?** € 86.91 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/331443452-e-heater-300w) ## Best For - fluval enthusiasts ## Why This Product - Trusted fluval brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Safety-First Design:** Built-in fish guard and automatic shut-off protect your aquatic ecosystem from overheating and harm. - β€’ **Sleek & Durable Build:** Compact black design blends seamlessly into any setup while standing up to daily use. - β€’ **Fast & Efficient Heating:** 300W power ensures your aquarium reaches the perfect temperature swiftly, minimizing stress for your fish. - β€’ **User-Friendly LCD Display:** Clear Fahrenheit and Celsius readouts let you monitor temps at a glanceβ€”no guesswork needed. - β€’ **Precision Temperature Control:** Dual sensors deliver real-time, ultra-accurate water temps to keep your aquatic friends thriving. ## Overview The Fluval E Heater 300W is a high-performance aquarium heater featuring dual temperature sensors for precise monitoring, a clear LCD display in both Fahrenheit and Celsius, and fast heating technology. Designed with an integrated fish guard and automatic shut-off, it ensures maximum safety for fish and invertebrates. Compact and durable, it supports aquariums up to 375 liters, making it a reliable choice for professional and hobbyist aquarists alike. ## Description Buy Fluval E Heater 300W online on desertcart.ae at best prices. βœ“ Fast and free shipping βœ“ free returns βœ“ cash on delivery available on eligible purchase. Review: Amazing !! - The best heater I’ve ever bought for my 200 litters aquarium. Incredibly accurate! Well designed, and perfectly safe! Review: I received this product in a damaged and used condition, which was disappointing. The item clearly showed signs of white minral deposit on black plastic, and the packaging was in poor shape. I expected a new and undamaged product, so this was a letdown. I would advise caution when purchasing from this seller to avoid a similar experience. ## Features - Dual temperature sensors provide accurate and real time water temperatures - LCD temperature display available in both fahrenheit and celsius range of 68 to 93 degrees fahrenheit - Fast heat technology built with a safety shut off integrated fish guard to protect fish and invertebrates ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001VMSK0I | | Allergen Information | Nut Free | | Batteries Included | No | | Best Sellers Rank | #28,535 in Pet Supplies ( See Top 100 in Pet Supplies ) #1,659 in Aquarium Accessories | | Color | Black | | Customer Reviews | 4.2 4.2 out of 5 stars (5,939) | | Date First Available | 6 August 2012 | | Flavor | Flavorless | | Item Weight | 371 g | | Item model number | A774 | | Number of Items | 1 | | Pet Life Stage | All | | Pet Type | Fish and Aquatic | | Product Dimensions | 3.3 x 1.8 x 18.2 cm; 371 g | | Quantity | 1 | | Size | E300 | | Special Features | Durable, Easy to use, Heating function | | Specific Uses | Indoor | | Voltage | 230 Volts | | Volume | 375 Liters | | Wattage | 300 watts | | batteries required | No | ## Product Details - **Brand:** Fluval - **Colour:** Black - **Form factor:** Dish - **Indoor/outdoor use:** Indoor - **Special features:** Durable, Easy to use, Heating function ## Images ![E Heater 300W - Image 1](https://m.media-amazon.com/images/I/61AOPqZZuxL.jpg) ## Questions & Answers **Q: Just can't seem to adjust the temp. It flashes 77, but the temp stays at 75. Why?** A: I was having the same problem, though mine was stuck at 74.5--it stayed blue and never got higher, though it was set to 77. I called Hagen, and they said try unplugging it for 10 minutes, then plug it back in to see if that helps. It didn't; they'd said if that was the case it was defective and to return it. Mine was <1 week old. **Q: I just bought this item September of last year and it wont let me adjust the temperature after the initial setting when I first had it** A: So you move the adjusting orange dial/thingy and doesn't change temp? Some times you have to move it all the way, let it return to the neutral position and the move it again to and so on. If that doesn't work, it may be faulty, contact Fluval, these have good warranty. **Q: does this heater go in the tank** A: To clear any confusion, the heater is fully submersible to 39 inches. The photos in the instruction showing tank placement are misleading. The ones marked with an X means do not let it hang by the cord and do not just lay it on the bottom of the tank. Rest assured that the unit is sealed well and you are better off fully submerging the unit to prevent water evaporation from negatively affecting the heater. **Q: Will I have "low flow" problems running only sponge filters?** A: Your air pump running the sponge filters circulate the water. The pump power will determine whether or not there is β€œlow flow.” ## Customer Reviews ### ⭐⭐⭐⭐⭐ Amazing !! *by H***M on 28 August 2022* The best heater I’ve ever bought for my 200 litters aquarium. Incredibly accurate! Well designed, and perfectly safe! ### ⭐ Review *by K***N on 29 October 2023* I received this product in a damaged and used condition, which was disappointing. The item clearly showed signs of white minral deposit on black plastic, and the packaging was in poor shape. I expected a new and undamaged product, so this was a letdown. I would advise caution when purchasing from this seller to avoid a similar experience. ### ⭐⭐⭐⭐⭐ Review *by D***D on 23 March 2018* I was having problems keeping my new tropical aquarium temperature stable, even though I was using the correct sized heater for my tank. So I did some research into my fluctuating heat problem. I found on the internet that my problem might be caused, by my house being too cold, due to me living in the countryside. It recommended that I used the next sized heater up from mine or to use 2 heaters to stabilize the temperature. Being that my heater I had was a 200 wat I decided to go for a 300 watt heater. My next problem was, which make to go for.. For this again I turned to the internet, on the reviews done on the different makes. I was guided towards the "Fluval E300" by being one of the top recommended by the review web sites. From there I went on the Amazon web site. I checked the customer reviews. They were very mixed, in their opinions. So I was unsure but noticed there was a couple of reviews that stated that if you followed what they had done, all was well & that would rectify those problems the other reviewers were having, while using this item. So it was at this point I ordered it, even though it was quite expensive compared to some others at Amazon. It arrived the next day via Amazon Prime Delivery. I eagerly unpacked it and swapped it over. I followed what some of the other reviewers had stated to do, just so I could get the best out of this heater. 1st; I placed it at a 45Β° angle in the aquarium, as per the other reviewers advice. 2nd; I made sure it had a good water flow over it 3rd; adjusted the temperature to what I required. Then left it alone to hopefully sort out my heating issues. The next day I went straight to the aquarium, to check the temperature of it, against my other thermostat placed on the opposite side of the aquarium to the heater, I was very skeptical at this point. Well low & behold it was within 0.4Β°c difference. Since having this "Fluval E300" heater I have checked the temperature on numerous occasions and the temperature hasn't changed, even during the night, when it is at it's lowest room temperature. I would definitely recommend these "Fluval E series" heaters but just be guided by the above advice and other helpful reviews please, and it will be a great product for you, just as it is for me 5++ highly recommended item time has moved on now and at least 6month & still the heater is perfect keeping good temperature ## Frequently Bought Together - Fluval E 300 Watt Electronic Heater - PAIZOO Fish Tank Digital Thermometer Accurate LED Display to Β±0.9Β°F Tank Thermometer Aquarium Temperature Measurement Suitable for Fish, Axolotl, Turtle or Aquatic - API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.nl/products/331443452-e-heater-300w](https://www.desertcart.nl/products/331443452-e-heater-300w) --- *Product available on Desertcart Netherlands* *Store origin: NL* *Last updated: 2026-04-23*