JAHEA Small Aquarium Heater,Submersible Adjustable Mini Fish Tank Heater 10W,Betta Heater with External Temperature Controller,LED Temperature Display, Used for 1-2 Gallon

I have a bunch of chickens and it can be really hard to keep their water thawed in the winter. I have tried so many different things and spent so many hours over the years thawing giant buckets of frozen water in the middle of a frigid snow storm. This here is the ticket to consistent thawed water! Just plug the aquarium heater in and throw the little heater end in their water and it always stays thawed even on those really cold winter days! This has saved me so many hours of frozen fingers! I love it!

Perfect heater for our 3 gal fish tank with glofish tetras. You set the temp and it will keep it at that until you change it. Works great and my fish are happy

Nice ultra-compact heater. Easy to use, with just one button that sets temp on the in-line controller. Easy to read temps. Red light heater is on, green it’s off. Integrated thermometer is relatively accurate compared with a reference thermometer. Great for a nano tank- but keep in mind it’s still only 20w.