Get rid of your pool guy. The copper exposure has warped his brain! The copper will create green stains and green hair. There's no quick-fix to algae--you must get and keep your FC level high enough to kill it ALL! At a CYA of 100, I believe the level is 20ppm, but if you don't have a vinyl pool, higher is fine--25 or even 30, until it's clear. At CYA of 100, I believe you must keep your daily FC around 8-10--not sure.