I always defer to Richard in these matters, but you'll notice that it DOES help clump particles so the filter can trap them--I think this is BETTER than having them fall to the floor of the pool.

And, BTW, I've never used or needed a flocculent in this pool going on 8 years. I did use it once in my old pool, a little Intex, and only because I had messed up by following pool store instructions!