I've been reading this site at various times for nearly 3 years. I was so tired of my algae. Brushing it every day, and the only thing the pool store could recommend was a different anti algae, and more cyanuric acid. I barely controlled it, and the house sitter inevitably let it get worse on any absence. 3 days of SLAM and its never looked better. All the algae is gone, even up between the tiles. The first day took 230 ounces of 7 1/2% bleach, rapidly fell off over 5 days, and now for a week its needed only 3 jumbo chlorine tabs (1 1/2# total, about 1/2 of that has solubilized). If you're not an "early adopter", pull up your "big girl panties"
and DO IT! SLAM NOW!
and DO IT! SLAM NOW!