So this is getting to be pretty annoying and tiring...i have a 75g tank that has been set up for 2 months, all live rock and a 40g sump,the bacterial growth(that is what i'm seeing)comes and goes like if it was the boss of the tank.recently it had a big white cloud that i hated it, at the end i bought a uv and it was crystal clear no problems for like 2 days...came back today and the slime is on the rocks again!!!! Are you kidding me? I barely feed cause i only have 3 small fish and like 3 corals so why this keeps happenning? I'm at loss really, any help would be appreciate it, this has ne er ever happen in my last tanks for real.