Took about 5 weeks to do a fish in cycle. Tank has been cloudy through most of the cycle. I have a 40 gallon with a fluval 406 and 4 yellow lab cichlids. In my filter I have 2 bins of biomax, purigen, and filter floss. As of three days ago I have had 0 ammonia, 0 nitrite and 10 nitrate. The cloudy ness looks no better now then while it was cycling. Am I doing something wrong? Is this still a bacterial bloom? 50% water changes do not help.