If its hair algae just Get the P.H up to high 8's I use Arm and Hammer Laundry washing Soda.. About 3 Tbl spoons mixed in a large cup of water and just pour it in and keep the P.H elevated like thay for a few weeks And hit it on two fronts won't hurt But get some Kent's Tech M magnesium and use that to keep the Mag up and stable at 15 to 1600 PPM for the two weeks also. You have a denitrater coil ? Might want to add one also.. _________ Some of the world's greatest feats were accomplished by people not smart enough to know they were impossible (Doug Larson) |