Well, as the heater has been on the condensation has disappeared. If I took it back to the store and mentioned that there was condensation inside, they would ask me where, and of course there would be none. At this point I think they would tell me to take it back home.

I have the heater set at 70F, but the thermometer in the tank says that it is only 60F. I phoned a fish store here and the guy says that tank thermometers are usually always wrong, and that I should go by what the heater says. Over the course of the afternoon I was slowly turning it up, the light would go on for the little bit that I did turn it up, stay that way for a while then shut off. And, like I said the thermometer is still at 60F. Can someone comment on this situation I have here. Thanx a bunch.