I have an in ground pool, I used Green to Blue through my skimmer like directions said. I have a sand filter. It seems like the green to blue shot out of my jets & is all over bottom of my pool. Still green not as dark, but cannot clear it up. Had water tested Chlorine high everything else seems to be fine. How can i get that sandy stuff off my floor, tried vacuuming it does not work. My pool holds 35,000 gallons of water. Any suggestions please.