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Hi, just opening my pool for Spring (NSWG). Plaster, 45000 gallons. Currently filter is cracked and waiting on a part. I can recirculate for now. I have a fairly large algae bloom. My TA is 90. CA is 250. CYA is 50. pH is reading > 8.0. Not unusual for my pH readings to be high when opening. I...

I hate asking this but, if I add DE to my sand filter to improve filtering and then backwash, do I also wash out the DE at the same time? Pardon my rookiness.

Tested my water 4 days ago and got FC: 4.0 pH: 7.4 TA: 80 Added 10 lbs of baking soda (Arm and Hammer) for inground pool at 45,000 gallons. Also added 1 lb of granular diclor. I also use Trichlor tabs in a float. Retested today and got: FC:4.0 pH: 8.0 TA:100 It is a bit green and hazy after...