Hi all, Please help. I had my water tested while buying a new testing kit(got a Taylor K-2005) I want to do BBB this year. Cover had holes so water is dirty with bottom sediment CYA 70 FC 0.4 TC 0.4 PH 6.8 Just opened pool and filled to level. I tried to do the pool calculator and don't really understand it. I know I will vacuum but I would think I have to shock with bleach as I just opened it and there is a yucky color to water clear on top more towards bottom water tested no algae. How much would I add? 17,200 gal 27ft ABG with a petair 1.5 cartridge filter