Hello. I have had a heater in my tank for about 3 weeks, it is just a cheap one (10 watts) and it keeps the tank at 72 degrees. It used to be 65 with no heater, so this was an improvement.
The heater I use now also fluctuates for some reason... I do not like that. I want to get a new heater... I have a 2.5 gallon tank. Please give me some advice. I need one before I leave for Alaska, so I want to buy one from a shop, not online. I only have access to Petsmart and Petco. Please give me some advice from those shops. thanks so much