hygger Small Aquarium Heater, 50W Submersible Betta Fish Tank Heater with Adjustable Temperature External Controller, Turtle Heater with LED Display for up to 10 Gallon Tanks

I've trusted Hygger products for years. This little 50w it small & reliable for my 5gal Quarantine Tanks. Quite dependable!

I bought 2 of these for my 20 gallon aquariums a few months ago and they are working great so far. It's nice to just look into the aquarium and see the temperature! I highly recommend these! They came very fast and I have had no problems!

I purchased 2 of these heaters. A 100 watt for my 10 gallon tank and a 150 watt for my 20 gallon tank. They have been installed for several days. I woke up this morning to my 78° tank reading 87° and climbing and one of my healthy fish dead. I will be returning both of these heaters to protect my plants and fish. Do not recommend.

Works great for my 15 gallon tank. It doesn't matter if the suction doesn't work since it hangs from the corn over the edge anyway but it's stuck fine for the last 6 months. It's real nice being able to change temp without sticking hands in tank if you need to (but once it's set you shouldn't really change temp anyway). I love seeing the temp reading and the red light on if the temp has dropped and the heater is working. The temp light is on all the time but I have a plant in front of it so it doesn't bother me any. Love the size and shape and that it keeps my big snails from climbing on the heating element.

Besides getting a used one it seems to be working good so far. Takes awhile to get to temp and when it does it's pretty accurate.Really like the thin profile.

Best little heater for your smaller aquarium. I use this on my 20g 150 watts. It has a standard plug in. This is hyggers best compact heater available.

I wish this heater would have worked out for me because it’s super nice. The way my tank was designed it was to be placed into a space in the filter compartment. (Fluval small tank) It was too wide so I had to send it back

Product does everything as prescribed. Simple to use and accurate. I tested the temp reading on this device with a separate analog thermometer and it was within 1 degree. I've had very good results with Hygger products (lights, etc) and I expect the same with this heater. I highly recommend it.