25W 50W 100W 200W 300W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Suction Cup (50W)

Works as expected. I use it for my chickens. I have their water in a 5 gallon bucket with those little orange nipple valves installed on all sides. I have this thing cranked up to 90 degrees and amazingly it keeps the water and the valves from freezing even when the temp dropped down to -9 degrees F. outside. So the chickens can get to their water on days when a water bowl freezes solid inside of a couple hours.

I got the 50W for my 7.5 gallon tank. I’ve never had a problem with this heater. It’s always heated my water to my desired temperature. The only thing I would suggest is to monitor your water temperature within the first couple hours of introducing the heater as it needs some time to adjust.

I could not get the usual brand I buy fast enough so I took a chance on this one. So far it is working perfectly. It is easy to adjust to the temp that you want and comes with suction cups to make installing easy.

Good heater just super hard to adjust. But works amazing!!

Works well. Easy to use.

Stopped working after 6 months. Update: Company reached out to offer a full refund, very impressed by quick and thoughtful company response

The heater was perfect for my 10 gallon tank but was too much heat for my 2 gallon tank. No issues whatsoever.

This is the best heater you could ask for at this price. I have had one of them for about a year, and it’s still going strong. It’s in a 55 gal tank, and I gotta make sure I don’t accidentally turn it too high while cleaning, cause it gets HOT.

Will be happy if it lasts at least 5 years