DIMPLES

HI : ALL AT MY WITS END HERE, AND FUSTRATED , ALL MY CHEMICALS ARE IN LINE , PH 7.2-7.5 , TOTAL HARDNESS ,100 TO 200 , CHLORINE 5/10 , TA ,120 ,CYA50 TO 100 ,WATER IS PRETTY CLEAR , ITS JUST WHAT EVER AT THE BOTTOM CANT SEEM TO VACCUME OUT , I DO THE BEST I CAN , BUT ITS LIKE A POWDER THAT FLOATS , OR PUFFS UP , THEN THE POOL CLOUDS ALL OVER AGAIN , AND AGAIN , I BACK WASH ECT , EVEN TRIED DE AS A FILTER AID , I ALSO USED OMIN ALGEA DESTROYER , THE WATER WAS CYRSTAL CLEAR BUT STILL POWDER SUBSTANCE ON THE POOL BOTTOM I USED ZEO LITE SAND , THE POOL IS 10.000 GAL , OVAL 15 BY 30 COULD IT BE A FALL OUT I USE LIQUID CLORINE AS A SHOCK , WHAT COULD THIS STUFF BE , I ALSO USE GRADUALS AND PUCKS IN FLOATER