hygger Small Aquarium Betta Heater, Submersible Fish Tank Heater 10W/25W/50W/100W with LED Digital Display, Suitable for Marine Saltwater and Freshwater up to 5/10/16/26 Gallon

Awesome so far! Using in my chicken waterer and works perfect. You can see the current temp all the time and set it at good temps for the water. It keeps it nice temp in the freezing weather. PERFECT BUY IT!!!!

This works great keeping my little 1.5 gallon sea monkey tank heated to 79F, even in the winter. I got this to replace a cheaper one that stopped working after just a couple months. Love the hygger brand, and it is well worth the price.

Small but works well in our tank. Suctions work great, once positioned correctly. Thermostat’s easy to set and keeps temperatures at that setting.

Heater works wonderfully and it is by one of my favorite brands. It has thick glass on it and has a well-made design. It should last me for quite a while.

I bought this for its small size to use in a small hospital tank. When I first turned it on, it got up to temp fairly fast but when I stuck my hand in the tank much of the water was still cold. I gave it a good stir and then all was well. It seemed like it thought it had reached temp because the water immediately around the heater was warm so it was holding steady there. This might only be an issue on tanks with no circulation. Once I manually circulated the water it did great and held temp nicely. The temp is matching my floating thermometer within a degree or so. I would recommend primarily due to its small size.

Works great hasn’t given me any problems very small but works good in a 6 1/2 gallon tank

These heaters are perfect for smaller tanks. I have 3-gallon tanks for my Bettas, and these heaters maintain the temperature well. The cool thing is that they are only about 3" long and don't consume the tank, and you can adjust and monitor the setting with a digital display. I use the 10W and it's perfect. Hygger has other items that I use and have been happy with as well.

This heater was a replacement for a flat heater that didn't work at all. Hygger has been a great brand for us. I have been happy with all of the aquarium equipment that I have purchased from them. The heater is in a 2.5 gallon tank. It's been maintaining a consistent temperature for several months now. So far, it seems durable and setting the temperature using the attached temperature control unit is very easy. I recommend this heater for small aquariums. The build quality and durability make this a good value for the money.

Consistent temperature

Quality product for the cost! Helped my fish from dying in the cold water from my AC!

Will not stick to the tank - piece of junk