Oh god, one of these forums huh...30 years in the biz, i know what I'm talking about. I get right to the point & take care of the problem. You seem like one of those pools guys that'll tell a customrr anythng just to get their kney. Then they call me a month later to fix what you messed up. I've had it with you people. New to the website, not pool care. Algaecides work great by the way. I recommend people like you to go back through your books or take a refresher course every couple years with a the new products coming out all tue time