this is the best, do not use more than directed, it will have an adverse effect. 1 capful per 10k gallons, add shock as directed. Brush pool surface, algae will not die unless brushed!!What's the best thing for yellow algae? I have a little of that and green going on right now. I want to get the water crystal clear before I change out the filters.
I do not miss shoveling out sand filters and hosing down hot tub filters while getting eaten alive by insects. Hats off to you.