my brother is soo poo. he feeds his fish soo much and piles his tank up with rocks n all sorts. its a 6ft tank and one canister with a power filter. it looks so bad when a fish stirrs the bottom up. the funny thing is we have pregnant peacocks, pregnant zebras, pregnant red jewls and pregnant melechromis johanni. its nuts. no room to put them any where. the two breeding tanks have baby zebras and the pregnant peackock. its nuts. dont understand how his fish breed and mine dont when i should have better water as i do water changes and he dosent