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Fluval E 50w Electronic Heater

Code: A771
  • £43.49
  • RRP £57.99
Item in Stock   |   Usually dispatched within 24 hours

Fluval E 50w Electronic HeaterSimply the most technologically advanced aquarium heater available today, the Fluval E50 Advanced Electronic Heater with VueTech technology delivers peace of mind by continuously displaying real-time water temperature. Equipped with an intelligent digital microprocessor monitoring system with dual temperature sensors, this heater continuously monitors and displays the aquarium water temperature, ensuring the safety and well-being of your aquarium inhabitants. Other excellent features include precision temperature control that allows settings in 0.5-degree increments, an integrated fish guard that provides advanced protection, and a slim profile mounting bracket. The E50 is a 50-watt heater that is ideal for aquariums up to 60 L (15 U.S. gal.) and can be used in fresh and saltwater tanks.

Why is my E Series heater not reaching the desired temperature?

As E Series heaters are housed in protective casings, it’s important to ensure they are subjected to strong water movement. Ambient room temperature is also a factor: if the difference between it and the heater’s set temperature is more than 3 °C (8 °F), additional heating capacity is likely necessary. You can either add another heater or upgrade to a more powerful unit.

Are E series heaters fully submersible?

Yes, E Series heaters are fully submersible. The instructional manual specifies a minimum water level.

Why does my E Series heater sometimes flash blue in the morning?

This is probably due to the fact that the water temperature has dropped by one or two degrees overnight.

My heater won’t hold a temperature of 80°F (26.7°C) in my aquarium. Do I need to add more heating power?

Most likely the answer is yes. If you wish to maintain 80°F in your aquarium, you will likely need more power or begin by warming up the room itself as the ambient temperature is very important. The cooler the room is, the greater the energy required to increase the aquarium temperature.

What dose a heater do in a fish tank?

A heater in a fish tank is used to maintain a consistent, appropriate water temperature for the fish and other aquatic life living in the tank. Different species of fish have different temperature requirements, so it's important to ensure that the water temperature in the tank is within the appropriate range for the specific type of fish you are keeping.

In general, most tropical fish need a water temperature in the range of 24-28 degrees Celsius. Coldwater fish, such as goldfish, may prefer water that is slightly cooler, around 20-23 degrees Celsius.

A heater in a fish tank helps to maintain a stable water temperature by using an electric heating element to warm the water. The heater is typically placed inside the tank and connected to a thermostat that measures the water temperature and turns the heater on or off as needed to maintain the desired temperature.

It's important to monitor the water temperature in your fish tank regularly and to adjust the heater as needed to ensure that the temperature stays within the appropriate range for your fish. If the water temperature gets too cold, the fish may become sluggish and inactive, and may be more prone to illness. On the other hand, if the water temperature gets too hot, the fish may become stressed and may also be more prone to illness.

Payment Methods

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Next Day Shipping Upgrade - Cut off is at 4:00 pm

Orders after that time will be processed the next working day


Please Note: We only deliver ponds and pond plants on our own delivery vehicles!

The blue highlighted area on the map below is where we deliver on our own vehicle! Unfortunately, if you are not in one of these postcode zones we are unable to deliver certain items such as plants, small glass items and selective other products.



We offer a few different delivery options depending on the size and value of your order.

Orders over £50 qualify for free mainland UK (excludes Northern Ireland) delivery which will arrive within 3-5 working days of the order being processed.


Residents of Northern Ireland, please provide your EORI or XI Number.

If you do not have one, please follow the information at


Orders Below £50 in Mainland UK will be charged a standard delivery fee of £5.99.

Additional Shipping Charges

For any orders that do not include Aquariums, the below is charged:

Next Working Day Parcel Delivery to Mainland UK - £7.99 OR £2.99 if the order is over £50

Standard Parcel Delivery to Northern Ireland £8.99

Standard Parcel Delivery to Scottish Highlands & Islands £9.99

Standard Parcel Delivery to Jersey & Guernsey £12.99


For all Aquarium deliveries (Excluding biOrbs & Smaller Aquariums), the below is charged:

Next Working Day Pallet Delivery - £20

2 Hour Booking Slot Pallet Delivery - £20

Pallet Delivery to Northern Ireland - £45

Pallet Delivery to Isle of Wight (PO36 and Above) and Scottish Highlands (AB, PH, IV1-36, IV, KW1-14, KY, PA21-41) - £45

Pallet Delivery to the Scottish Isles (KA27-28, PA60-90, ZE, JE, GY, IM, IV40-56, KW15-17, PH42-44, PA20, PA42-49) - £120

Pallet Delivery to Outer Hebrides (HS) - £140