I'm confused. Your pool has a ton of algae again, but the water is crystal clear? So the algae you are seeing is on the bottom of the pool, is that right? What color is the algae? Is it green, yellow/mustard, brown, some other color? Is it everywhere or mostly just in shady areas of the pool? Is it dust-like or is it partially stuck to pool surfaces? Are you sure it's algae and not pollen or dirt? Have you tried using a skimmer sock in case it's something like pollen dropping into the pool?