hygger Mini Fish Tank Submersible Heater 50W for 5-10 Gallons Small Betta Aquarium Heater with Digital Display Controller Adjustable Temperature

I bought many of these because they work really well and have an easy to read digital temperature read out that matches what my thermometer says.

Love this small heater, been a couple weeks so far but it is small and compact and has reliably maintained temp at 86F which I am doing to control an ich situation in my 5.5 gallon. I also like seeing the small green light letting me know the temp matches what I have it set to.

Works great! Easy to set up and view current temperature.

Keeps the temperature pretty consistent and I like that it’s easy to adjust the temperature, you don’t even have to get your hands wet. I like the size of them, they don’t take up a bunch of room and have a sleek design. I even bought another for my new tank.

It works great so far, and it can also display temperature! But I do not understand why there are gaps on the heater. I have to shield them with net in case my tiny shrimps may enter.

wow, this heater surprised me. I previously had a much larger heater for my 15 gallon. But it took up so much space in the tank and it was hard for me to find ways to cover it. I decided to give this one a go and it does a perfect job, and so much easier to conceal in my tank. It truly is a 'set it and forget it' product, which I love.

Does the job. It is small enough to put into the back of a nano tank's filter area.

Love this for my 5 gallon for my betta- easy to use, and stays in place