I have had my used 135 gallon tank set up for about a month and a half. When I brought it home I made the mistake of not cleaning the gravel before setting up tank at home probably because the tank looked so clean when I broke it down. Anyway I removed all the gravel because I don't like it and I realized it was real dirty and my PH was low, and plan on going with sand. Since I removed the gravel the Ammonia has gone sky high! Everything was fine before removing gravel. The question is do I keep doing water changes every day or do I need to let the tank cycle again?? I'm guessing I must have removed good Bio along with the bad when I removed all the gravel??? Any HELP would be much appriciated.



