Until yesterday I had a brown-black swampy pool due to algae and pool cover failure. I went to the local pool store and was encouraged to purchase green-to-clean for the algae because my pH was 8 (FC 0, CC 0, TA 120, CYA 0). I was instructed to add it, followed by 2 bags of calcium hypochlorite, wait 12 hrs and add another bag, and repeat in another 12. The pool water didn't do anything with the chlorine application; no FC and continued to smell like sewage. My thought was with no FC either the algae is really feasting or it's so contaminated it can't hold a level with such minimal chlorine added (logical to me). I called the pool store and got an unsure answer so I preceeded to add an additional 7 bags of shock. Pool water is now a different shade of milky green but continues to smell bad and shows no FC (pH is still 8+). Unfortunately, I will have to wait until tomorrow to check CC. So what's the deal with the minimal amount of shock that is supposed to be added over 24 hours? My swamp and that amount didn't compute.