--- product_id: 48157804 title: "E Advanced Electronic Heater, 300 W" brand: "fluval" price: "MX$4396" currency: MXN in_stock: true reviews_count: 10 category: "Fluval" url: https://www.desertcart.mx/products/48157804-e-advanced-electronic-heater-300-w store_origin: MX region: Mexico --- # Real-time LCD temp display 300W precise heating power Advanced safety with fish protection E Advanced Electronic Heater, 300 W **Brand:** fluval **Price:** MX$4396 **Availability:** ✅ In Stock ## Summary > 🌈 Stay cool, stay warm, stay ahead — aquarium heating redefined! ## Quick Answers - **What is this?** E Advanced Electronic Heater, 300 W by fluval - **How much does it cost?** MX$4396 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/48157804-e-advanced-electronic-heater-300-w) ## 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 - • **Fish-Safe Design:** Integrated protection prevents direct contact with the heater core, ensuring your aquatic friends stay safe. - • **VueTech Visual Control:** Dynamic LCD screen that changes color and flashes to alert you instantly of temperature deviations. - • **Microprocessor Accuracy:** Double temperature sensors with 0.5°C incremental adjustments for pinpoint thermal management. - • **Sleek & Secure Mounting:** Slim profile with advanced mounts for easy installation and minimal aquarium disruption. - • **Precision Heating Mastery:** 300 watts of consistent, reliable warmth tailored for aquariums up to 375 liters. ## Overview The Fluval E Advanced Electronic Heater 300W is a cutting-edge submersible aquarium heater featuring VueTech technology with a color-changing LCD display for real-time temperature monitoring. It offers precise temperature control with microprocessor accuracy and double sensors, ensuring stable conditions for freshwater and saltwater tanks up to 375 liters. Designed with integrated fish protection and a slim, secure mount, it combines safety, style, and performance for the discerning aquarist. ## Description From the manufacturer Fluval electric heater aquarium heater Probably the most technologically advanced submersible aquarium heater of our day with VueTech technology. Its LCD display gives a soothing feeling thanks to its continuous real-time water temperature display. The temperature display changes colour when the water temperature deviates from the preset temperature. Should external heat sources or other facilities cause an excessive rise or drop in aquarium water temperature, the coloured screen will start flashing to indicate a potential risk. VueTech Technology Thanks to the LCD temperature display, the current temperature of the aquarium water is displayed at all times. It changes colour when the temperature of the aquarium water deviates by 1°C or 2°F from the preset temperature. If the temperature of the water rises or drops by 3°C or 5.5°F, the colourful indicator flashes to indicate a potential danger. Microprocessor, precise temperature setting, heater mount with slim design and advanced safety The microprocessor technology with double temperature sensors ensures accurate real-time measurement of water temperature. With the lever, it can be precisely adjusted in 0.5° increments. No need to remove the holder. Thanks to the integrated fish protection, the animals cannot come into direct contact with the heater core and the glass cover is protected from impacts. VueTech technology (display changes colour when temperature changes) Precise and easy temperature adjustment Advanced Security mounts Digital microprocessor Suitable for freshwater and saltwater aquariums Temperature status display Blue The aquarium temperature is too low. The heating function automatically sets in and increases the temperature. Green The aquarium temperature is in the desired range and the control function sets in. Red The aquarium temperature is too high and the control function sets in. Lower the temperature gradually. E 50 aquarium heater, up to 60 litres Dimensions: 25 x 4.9 x 3 cm E 100 aquarium heater, up to 120 litres Dimensions: 30 x 4.9 x 3 cm E 200 aquarium heater, up to 250 litres Dimensions: 35 x 4.9 x 3 cm E 300 aquarium heater, up to 375 litres Find the right heater for your aquarium Review: great product. - These may be more expensive then other aquarium heaters buy they are excelent. providing you give these heaters/thermostates a couple of hours to settle once you adjust the tempeture control they work perfect. hopefully these will last a number of years. Review: Great aquarium heater - 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 desertcart 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 desertcart. It arrived the next day via desertcart 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 45° 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 0.4°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 ## Features - High-quality material - Good quality - A variety of products for pets ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001VMSK0I | | Best Sellers Rank | 12,839 in Pet Supplies ( See Top 100 in Pet Supplies ) 31 in Aquarium Heaters | | Brand Name | Fluval | | Colour | Multicolour | | Customer Reviews | 4.1 4.1 out of 5 stars (3,622) | | Form Factor | Dish | | Fuel Type | Electric | | Global Trade Identification Number | 00015561107747 | | Heat Output | 300 Watts | | Heating Coverage | 9.3 m² | | Heating Element | Radiant | | Heating Method | Radiant | | Indoor Outdoor Usage | Indoor | | Item Dimensions D x W x H | 18D x 33W x 182H millimetres | | Item Weight | 481 g | | Maximum Temperature Setting | 2 Degrees Fahrenheit | | Min Temperature Setting | 20 Degrees Celsius | | Model Number | A774 | | Mounting Type | Wall Mount | | Part Number | A774 | | Power Source | Corded Electric | | Recommended Uses For Product | Indoor, Aquarium | | Room Type | Basement, Bathroom, Garage | | Special Features | Durable, Easy to use, Heating function | | UPC | 015561107747 015561014168 | | Unit Count | 1 Stück | | Voltage | 230 Volts | ## Product Details - **Brand:** Fluval - **Colour:** Multicolour - **Form factor:** Dish - **Indoor/Outdoor usage:** Indoor - **Special feature:** Durable, Easy to use, Heating function ## Images ![E Advanced Electronic Heater, 300 W - Image 1](https://m.media-amazon.com/images/I/61AOPqZZuxL.jpg) ## Questions & Answers **Q: Is the plug a 3 pin or a 2 pin?** A: Just received my 200W heater with a 2 pin plug. This despite assurances elsewhere in the Q & A lists that all British orders are fulfilled using 3 pin plugs. Amazon, the great misinformation site. Will they replace it with a 3 pin? Should I hold my breath? **Q: is the 100watt suitable for 140 litre aquarium?** A: No it isnt, same as other responder says, too low powered for a tank that size, need the 150W, just make sure you have a steady flow of water over the heater, like from a filter outlet, to circulate the water evenly around the tank otherwise it wont work efficiently, and should be ok **Q: It says an e300 is for tanks up to 375l tanks. has anybody had any experience of this? as i'm looking to put the heater into a 364l tank.** A: My tank is only 245l but I have found this heater to be the best I've ever bought and it will do what it advertises, the only thing I found was it has to have very good flow next to it. Suzy. **Q: Is it normal for blue light to be on at night time** A: no it's not normal for the light to be blue at night blue means the water is too cold green means of water is the right temperature and red means the water is too hot, ideally your temperature should be around 25 degrees that should put it in the green if it's blue on an evening you need to turn your temperature up one degree or whatever it takes to get it within the correct range it should automatically do this if it's not you may have a faulty unit or the tank is to big for the heater ## Customer Reviews ### ⭐⭐⭐⭐⭐ great product. *by D***R on 30 January 2026* These may be more expensive then other aquarium heaters buy they are excelent. providing you give these heaters/thermostates a couple of hours to settle once you adjust the tempeture control they work perfect. hopefully these will last a number of years. ### ⭐⭐⭐⭐⭐ Great aquarium heater *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 45° 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 0.4°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 ### ⭐ I got the 300 because it is rated for 350 ltr and my tank is 200 so it should easily heat that but it does nothing *by B***O on 14 March 2016* Of all the products i have bought on Amazon this has to be the most dissapointing! I have messed with this thing for a day now and after researching on forums and looking at reviews i can no longer risk using this. It is at least 2 degrees out and when the display is blue meaning the temp is too low to the one you have set, it doesn't even attempt to heat up. I got the 300 because it is rated for 350 ltr and my tank is 200 so it should easily heat that but it does nothing. I have moved it to an area of high flow across the sensor and that does nothing. The instructions state it should sit upright with the top sticking out the water (the min water mark on the surface of the water) but fluval technicians on forums are telling people to fully submerse them, put them at an angle, lay them horizontally, switching them on and off and toggle to the min and max setting before starting, all of which i have tried and it still does nothing. I have now got a standard heater that works perfect without any fuss just as this overpriced worthless load of junk should!!! There are plenty of good reviews for this product but there are too many bad ones and at the risk of the health of expensive corals and fish it is not worth it. If you send it back you will still have to go out and buy one to replace it so if it is faulty and you are sent a new one you will still be out of pocket. Not fit for purpose and completely useless!!!!! ## Frequently Bought Together - Fluval E 300 Watt Electronic Heater - PAIZOO Fish Tank Digital Thermometer Accurate LED Display to ±0.9°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? - 🛒 **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.mx/products/48157804-e-advanced-electronic-heater-300-w](https://www.desertcart.mx/products/48157804-e-advanced-electronic-heater-300-w) --- *Product available on Desertcart Mexico* *Store origin: MX* *Last updated: 2026-05-07*