i had my new 4 gallon all nicely cycled, but then i thot, "hey, why dont i put some plants from my old 5 gallon in?" Bad idea! Ammonia stayed at the same level, but nitrite jumped to 7 ppm, and nitrate jumped to 5 ppm. now i'm gunna have to wait for the levels to go down before i can move my platys into their new home patience has never been one of my best qualities!