I had 4 $0.28 goldfish in my tank cycling it. Today 2 of them died (which one wasn't doing well since he came out of the bag). My question is...Is it just the cycling proccess? Is it normal to lose some fish? Or all? Should I leave them in the tank for bacterial purposes? Because Ive read somewhere you can cycle a tank with a rotting piece of meat. Another thing was that he was really that bright orange color when he was alive as was the other one, but when they both dies, one of them changed to a real gold color(like gold jewelry). Anyone know why one changed and the other didnt?