you need to do 30-50% WCs at least once a week. stress zyme is pretty useless and I don't reccomend using it.we have had the tank for almost 2 months now and our ammonia is 0 nitrite 1.0 and nitrates 0 and the fish have been in the tank for almost a month and a half. water maintenance is 10% wc and then we add 5ml of stress coat and 5ml of stress zyme. we have been checking on the parameters religiously to try and bring down the rites. but my husband said that the cloudiness went away while i was at work and our water is very clear. so we must have done something right