Hello Everyone, I have a 75 gal tank with a 40 gal sump and a Turboflotor 1000 skimmer. My tank has developed a massive algae problem. I have been fighting red slime for a few months now. The red slime has come and gone but never really goes away. I have used phosphate removers, Kent Marine Poly Ox and I do 20% water changes every 2 weeks. Now I have a green hair and a bubble algae problem. The way my tank is setup is I have 90 lbs of live rock that go right down the center of my tank. I have a mag 7 pumping water in on one end and the overflow and a rio 600 power head at the other end. I am thinking that DOC and detritus are getting trapped in the rock work feeding the algae. Is this the cause of my algae problems? I am wondering what opinions people have on this. I don't want to have to rearrange my rock work if I don't have too. Any help would be greatly appreciated.