I started thinking why exactly I am using an aquarium heater during the summer, and even for the matter in the winter. My house and apartment that I keep all of my fish between are year long between 72-76 degrees. Do you think I would be okay with not running a heater and having the fish just go with the flow of the house temp. It made me think this because I just moved my 55 gallon to my apartment and the AC went out. The house has been at 80 degrees and the aquarium was at about 78 degrees, just a couple degrees under room temp. Obviously with the AC being fixed now the temp is going to go between 72 and 74. Let me know if you think it is necessary!