Okay, last month, I set up a new tank, put Bio Spira in with established filter media...During the cycling process, my readings had nitrite spikes from week to week and it would go down to 0 but always had ammonia..I was thinking something was wrong becaue yesterday, i had a 1 ammonia reading with no nitrites...I thought it could be my old undergravel filter being clogged or not working properly..So I decided to buy a new undergravel filter which looked a lot better and I bought some Bio Spira..Well, after putting in the new undergravel filter and Bio Spira, my tank cycled in 30 minutes because I have 0 ammonia, 0 nitrite right now..