Marina® Betta Submersible Aquarium Heater
Works in 2.5 gallon as well as 1.5
I used this Marina heater in my 2.5 gallon tank and it kept the temperature at 78-80 degrees even though it says it is for a 1.5 gallon. The heater lasted for eight months however I did not follow the directions to wait for 15 minutes for it to cool each time that I unplugged it and took it out of the water. I think if I had done that it may have lasted the full year.
March 26, 2014