hygger 200w Aquarium Heater, Submersible Fish Tank Heater with Intelligent Temperature Control and Leaving Water Automatically Stop Heating System, for 20-40 Gallon Tanks

I had another brand that stopped working after many years of use. It was complicated to set and the heater piece was large. This new one I bought is a big improvement. The heater element is half the size and very easy to set and change temperature. I have a thermometer and the temperature is accurate. The cord is plenty long above and below the control unit and will work for most aquariums. So far I’m very pleased with this unit and recommend it.

I’ve purchased three of these heaters at different times for three different aquaria and recommend it highly! The energy saving mode is great and you have to hold button for a few seconds before entering any change mode so childproof/ mistake proof.

Love this heater and the out of water alarm and auto shut off! It's worked as expected, great buy!

It works very well. I like that it was easy to set the temperature.

Maybe I got a lemon I don't know but this was absolute garbage. Sad because I like Hyggars other products. Put into my tank, plugged in, set the built in thermostat control. My tank was at 81 when I started and wanted to raise it up to about 84. Right off the bat the product said my tank was at 83.6 degrees even thou 3 other thermometers I trust completely said tank was 81. So I set the thermostat to 86 to raise water temp to my required 84. I let it go for awhile and then rechecked water. Products thermostat read 86 now but my tank temp with 3 other thermometers barely saw any difference (81.4). Maybe amazon sent me one someone else returned that was faulty I don't know but I started a return and will not recommend.Only plus is that the built in thermostat was straightforward and easy to set up. Just wish the heater worked.

So far has been was working great I have one in a 75 gallon tank will probably add a smaller one just to supplement and keep a more balanced Temperature. looks fancy sleek without a high price and doesn't distract I'm happy

I just love it. Easy settings and keeps correct temps.

I have Hygger heaters in 3 tanks - they work great