Thanks Ben.

Will get right on it...just bought the 6% bleach and will start this evening. I need to get this clumped up algae off the top of my water...I think I can shop vac it off. My filter will clog up quickly now...can/should I just recirc with the bleach until I kill the majority....otherwise I can see myself back washing every 30 minutes. I can't see deeper than a foot or so into the water.