Try just vacuuming to waste to get that stuff out. When you aren't vacuuming, put a skimmer sock in your skimmer and clean it out. My skimmer socks have finally STOPPED getting so much pollen on them that it looked like yellow spackling paste!

If you must floc, use some Polyquat. Yes, the algaecide is also a flocculant. But if you use a lot, like a quart, expect your chlorine to plummet to 0 in 48 hours and be ready to shock it up at that point. It's not a bad idea--that's what I do just before I close in the fall.

I've never used clarifier, and have no idea why anyone would use it. If you follow the advice of this board, you probably never will need it.