I am having an algae breakout about two weeks into opening my pool this year. Water is going green. This happened last year, we had a stretch of 100 degree days and I let my chlorine go to low. This year my numbers are: TC 8, FC 8, PH 7.5 TA100 TH115 CYA 136. I have a 19,400gl IG vinyl, 1HP...