Can someone tell me why I got so much more green gunk algae this year when 1) I dumped the recommended (by Ben) amount of Polyquat in the pool last fall which I've never done before 2) I had all the #s right on and shocked it just before putting the cover on it?

I've spoken to several locals who gleefully tell me how crystal their water was when they uncovered. And I thought I was doing the "right" thing to avoid the mess I have.

Insight gratefully accepted so I don't repeat this mess next year.

Thanks.

CoffeeBean