I'm not sure about floc being sold under a different nae - the one I had was by BioGuard and it just said floc.

Yes absolutly I think you "broke up" the particles by moving - the stuff that settled at the bottom of my pool was very fine dust, dirt, etc...if I moved the vacuum too fast it got cloudy. It took 2 nights of adding the clarifier to get it sparkling...after the first night everything settled and I vacuumed to waste b/c it was so fine and I was afraid my sand filter wouldn't catch it all. Also, there were several directions on my bottle, one being if your pool is very cloudy add 3 oz per 3,000gal of water. I followed those directions and it cleared up overnight.

Good Luck!