Possibly one of the most reviewed heaters on the market today, the Fluval E 100w is a heavily debated heater which some love and some hate. I think its just okay.

To read the furious discussion about this heater, sorry reviews here!

Well, the Fluval E, a heater with a difference apparently, with its revolutionary “VueTech” technology which shows the temperature of the water around it, like a thermometer does! So you could have a normal heater and a thermometer but you do save some space with the Fluval E 100w, although the space concious would be using an inline heater, right?!

I have used this product for extended periods and it does in fact heat water, to the temperature you set it at, and has a nice plastic guard to stop cooking your fish if they get stuck on in or around it! The display changes colour from red to green and blue depending of the state and situation the heater is in. The one annoyance is there is no way in telling when the element is “on”, basic glass heaters have a red light when heating.

Attached to a slide on suction cup mounted bracket, the Fluval E 100w can be discreetly place in a corner and not worried about and every savvy aquarist should have a spare heater in the cupboard, just in case! Suitable for an aquarium of up to “120 litres”, this unit is more suited, especially if on its own, to a smaller aquarium of around 80 litres or less. The temperature adjustment itself is excellent, precise and in 0.5° increments, so great for dialling in that perfect temperature for all inhabitants.

All in all I think it a good unit, a bit over the top but does a good job overall and isn’t too heavily priced either!

Fluval are a good manufacturer in the aquatic scene and one would expect a good product from them. This wasn’t the case with the Fluval Edge 25w Heater.

See other reviews from disappointed customers here.

The Fluval Edge is a great aquarium and has brought design of the small aquarium to a new level with their revolutionary design. This aquarium does not come supplied with a heater so you automatically consider buying the Fluval Edge 25w Heater. Don’t. Its rubbish.

I purchased one of these heaters for a small medical aquarium set up for a poorly Cardinal Tetra after my previous (and very old) heater burnt out. Without thinking I grabbed a cheap small heater and installed it into the aquarium. The first thing I noticed was there was no heat adjustment and upon reading the box, the temperature is automatically set at 26 °Celsius which is the decent temperature of any tropical aquarium. The Cardinal Tetra needed 26 °Celsius, which was fine but this lead me to the main problem with this unit. Although this was installed in a 10litre aquarium, it wouldn’t get above 21.5 °Celsius in temperature and would fluctuate down to the ambient temprature of 18 °Celsius at times, regardless where I placed it in the aquarium.

This isn’t just an isolated incident, other enthusiasts have also complained about this heater being unreliable, and not working the way the manufacture describes.

If you have a Fluval Edge and want to install a heater so you can keep tropical fish, you would be wise to consider other options.