---
product_id: 77778509
title: "E300 Advanced Electronic Heater, 375 L"
brand: "fluval"
price: "₩244083"
currency: KRW
in_stock: true
reviews_count: 9
category: "Fluval"
url: https://www.desertcart.kr/products/77778509-e300-advanced-electronic-heater-375-l
store_origin: KR
region: South Korea
---

# Fast heat tech with safety shutoff LCD display in °F/°C Dual temp sensors for precision E300 Advanced Electronic Heater, 375 L

**Brand:** fluval
**Price:** ₩244083
**Availability:** ✅ In Stock

## Summary

> 🌊 Keep your tank perfectly cozy — because your fish deserve the best!

## Quick Answers

- **What is this?** E300 Advanced Electronic Heater, 375 L by fluval
- **How much does it cost?** ₩244083 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/77778509-e300-advanced-electronic-heater-375-l)

## 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

- • **Intuitive LCD Display:** Clear, color-changing screen shows exact temperature in Fahrenheit or Celsius, alerting you instantly to any fluctuations.
- • **Reliable & Long-Lasting:** Backed by a 5-year warranty, this Italian-engineered heater offers peace of mind and durability for serious aquarium enthusiasts.
- • **Rapid Heating with Safety:** Advanced fast heat technology combined with an integrated fish guard ensures quick warming without risking your aquatic friends.
- • **Sleek, Space-Saving Design:** Slim profile with a mounting bracket fits seamlessly into any aquarium setup up to 100 gallons (375L).
- • **Precision Temperature Control:** Dual sensors deliver real-time, ultra-accurate water temps to keep your aquatic ecosystem thriving.

## Overview

The Fluval E300 Advanced Electronic Heater is a high-performance submersible aquarium heater designed for tanks up to 100 gallons (375L). Featuring dual temperature sensors and a color-coded LCD display, it provides precise, real-time temperature monitoring in both Fahrenheit and Celsius. Its fast heat technology ensures rapid warming, while an integrated fish guard and safety shutoff protect aquatic life. With a sleek design and a 5-year warranty, this Italian-made heater combines cutting-edge tech with reliability for optimal aquarium care.

## Description

Fluval e heaters maintaining proper temperature is one of the most important factors in aquarium care. The Fluval heaters continuously monitor and display aquarium water temperature ensuring the well being of your aquarium inhabitants. Simply the most technologically advanced submersible aquarium heaters available today the Fluval e series features vuetech technology. Its LCD display delivers peace of mind by continuously showing real time water temperatures. During normal operation the temperature display changes color if the aquarium water temperature varies from the pre set temperature. Should external heat sources or other equipment cause the aquarium water temperature to rise or fall excessively the colored screen will flash indicating a potential risk.

Review: Nice thermostat with lot of info and easy readability - Very well made thermostat. The outer protective casing is great to avoid fishes being scalded. Nice feature from Fluval. Setting the temp is also very easy with the toggle switch to increase/decrease temp value. The display is large enough for easy readout under water and is very clear. Would reccommend it to all. Been using it for just 2 weeks now. No issues as of yet, fingers crossed. Will update review if anything more to be reported for a long term review.
Review: Good product with 99% accuracy.. - After using this product from last 4 months I am writing this review. Great product. Accuracy of this heater is good. The cost of this product is little bit high.. The seller response was great. I was little bit confused about my product delivery date,so I contacted to the seller. Trust me they are very polite and very helpful. They answered my all questions very politely..

## 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
- Equipped with a slim profile mounting bracket colored display alert system
- Suitable for aquariums up to 100 gallons 300 watts 5 year warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001VMSK0I |
| Best Sellers Rank | #24,601 in Pet Supplies ( See Top 100 in Pet Supplies ) #110 in Aquarium Heaters & Chillers |
| Brand | Fluval |
| Burner type | Radiant |
| Colour | Black |
| Country of Origin | Italy |
| Form Factor | Tower |
| Generic Name | Aquarium Heater |
| Global Trade Identification Number | 00015561107747 |
| Importer | Maple Pets International Pvt. Ltd. |
| Indoor/Outdoor Usage | Indoor |
| Item Weight | 371 g |
| Item model number | A774 |
| Manufacturer | +917225002229, Fluval |
| Max Temperature Setting | 2 Degrees Fahrenheit |
| Min Temperature Setting | 20 Degrees Celsius |
| Mounting Type | Floor Mount |
| Net Quantity | 10 Count |
| Packer | Rolf C Hagen |
| Product Dimensions | 4.6D x 8.4W x 46.2H Centimeters |
| Recommended Uses For Product | Aquarium |
| Special Feature | Adjustable Temperature |
| UPC | 015561107747 015561014168 |
| Voltage | 230 Volts |

## Product Details

- **Brand:** Fluval
- **Colour:** Black
- **Form Factor:** Tower
- **Indoor/Outdoor Usage:** Indoor
- **Special Feature:** Adjustable Temperature

## Images

![E300 Advanced Electronic Heater, 375 L - 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 “low flow.”

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice thermostat with lot of info and easy readability
*by N***S on 8 January 2020*

Very well made thermostat. The outer protective casing is great to avoid fishes being scalded. Nice feature from Fluval. Setting the temp is also very easy with the toggle switch to increase/decrease temp value. The display is large enough for easy readout under water and is very clear. Would reccommend it to all. Been using it for just 2 weeks now. No issues as of yet, fingers crossed. Will update review if anything more to be reported for a long term review.

### ⭐⭐⭐⭐⭐ Good product with 99% accuracy..
*by A***N on 6 May 2021*

After using this product from last 4 months I am writing this review. Great product. Accuracy of this heater is good. The cost of this product is little bit high.. The seller response was great. I was little bit confused about my product delivery date,so I contacted to the seller. Trust me they are very polite and very helpful. They answered my all questions very politely..

### ⭐⭐⭐⭐⭐ The packaging of this product was very bad with very low quality thermocol taped everywhere
*by K***. on 24 May 2015*

The packaging of this product was very bad with very low quality thermocol taped everywhere. Unpacking it left a lot off mess with thermocol pieces flying around and took a lot of time to clean. The product is too good and precise in functioning and measurement. It not only warns about temperature, but also warns if the flow of water is less.

## 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.kr/products/77778509-e300-advanced-electronic-heater-375-l](https://www.desertcart.kr/products/77778509-e300-advanced-electronic-heater-375-l)

---

*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-21*