Fluval Nano Aquarium Heater, 25 Watts

The heater maintains a temp of about 82F to 83F and there is no way to turn it down. I have it in a 5.5 gal tank.

I have had two of these heaters. One failed at about 8 months. The second has now failed at approximately 1 year. I love the heaters when they're working. Small compact, durable,and easy to set up with no adjustment required.

I got this heater after returning few heaters for my 2.5 gallon tank. It works well and doesnt take too much time for the tank to be of same temp. I am hoping I would be able to use this heater for a longer duration.

It's really hard to find a good and safe heater for a small 5 gal. that wont cook the fish or do pretty much nothing. This heater does all it's expected to do. I love not having to worry about the issues the wrong heater can have on my tank and fish.

Small, reliable, nice profile in a rimless tank.

Great except in rooms below 40.

The heater is working well and aquarium is staying at 78-80 deg. F.
Recommended to all with a nano tank.

I got this heater for my office 5 gallon. The building/office is extra cold during the winter, so I went one size up. I like that this model has an indicator light showing when it's on and heating. A couple weeks in and the temperature is still perfect.

I purchased this for an 10 gallon feeder snail breeding tank. No problems with it and it has been several months into the purchase.

I ordered this for my 5 gallon tank that houses my Betta, two mystery snails, and some ghost shrimp. Unfortunately, the item I received heated my tank to 82 degrees. I contacted customer service and they were very quick to respond. It sounds like the item I received was just calibrated incorrectly, but they sent out a replacement immediately and that heater is working great and maintaining my tank at 79-80 degrees. Great product and amazing customer service!