Hello everyone! I'm new to the board and new to aquariums! My father had a large aquarium when I was a girl but I didn't pay much attention. Now my little boy decided he wants fish so we have done some research (apparently not enough!) and we have had some success and some ...no so good success. Currently we have a male guppie, a female swordtail, and a common pleco in a 10 gallon tank. My most burning question is what temperature is ok? We have four fish but three died, the guppie survived but we lost a male guppie, a female sunset and a female silver mollie. The temperature I was told to keep it at was 76 degrees, but the tank somehow reached 82-84 for an undetermined amount of time. I assume this is what killed them. I have the heater off and the tank still reaches 82 degrees! help!