:happyfish
This is strange because I have the same thing happening to me. My tank has been set up for 3 months and pretty quickly it got really green like a swamp. I had no animals in it, so I shut the lights off for days and days, dropped the temp from 80 to 76 degrees and whala, the water cleared up perfectly. I added an anemone, yellow tang, clown, crabs and snails and steadily the water is getting green again. I do water changes, tests are good... no ammonia, nitrates, nitrites, Ph is good. I'm at a loss. I bought that clear water thing you mentioned but haven't used it yet. My thought is it will only be a temporary cure for the underlying problem. I just don't know what the problem is and nobody I talk to seems to know. I run a sea clone skimmer and two powerheads. I have 70 lbs. of live rock. Is your setup similiar?