Having raked and raked and raked algae already this spring, I'd sure like to know how one accomplishes this goal. The warm winter did me no favor in this aspect as I think the algae was growing strong the whole time. So far I have not found a chemical that works well, dyes are not really an option and barley straw seemed to work one year but didn't last. I'd love to have an algae-less pond that I can just enjoy for a while instead of labor over. FYI - clay bottom, 1/8 acre, sourced by run-off - I know probably the worst of all situations.