I can’t seem to get my pool water clear I have slammed the water doesn’t look green but the water is still cloudy I ran the pump to recirculate and the f.c. level doesn’t drop .5 over night and c.c is less then .5 ph is 7.2. The problem is if I turn the pump on to filter. The grids seem to plug up in about 3 hrs. The pressure goes up and the pump basket gets low on water. Is my only option a water exchange?