Pool has been up and running for about a week. I bought a Hayward 18in #150lb filter. Used sand from Home Depot. It has been running almost a week and water is almost clear. Been keeping the FC above 15 CYA is 30-40 PH 7.4 so far so good. Gotta vaccum it this weekend and temps is already 74! Once I get it right how many hrs a day do I need to filter? Day or night better? Thanks