I'm new to all of this stuff and i wasn't sure what cycleing the tank meant,I thought it just meant having filter and heater running for 3 weeks. I asked the pet store if it would be ok to put fish in the tank after 3 weeks of the heater and filter running and they gave me something called cycle and said to put it in the tank right before i put my fish in there and they'll be fine. And i just don't know what to do. My stepdad is going to the store to get me something to treat ich, But i was just hoping someone in here could help me know what kind of medicine to get.
BTW the water temperature is about 74. I got one of those heaters that keep it at that temperature, and now i'm starting to think that was a bad idea :(