i was wondering if it was possible to overheat a tank. i put my heater in the tank, and it was about 90+ degrees. I have a 3 gallon plastic tank. this is the heater.
i took it out, let it cool and the temp now reads a constant 78. should i put it back in? im worried about my new boy being cold, but i dont want a boiled fish either!
what should i do?