I got the dreaded green pool a couple weeks ago. I just inherited the upkeep duties from my mother in law as it is at her house and she has moved in with her new husband an hour away. Hey, free pool for us! Yes please! Pump was bad and while waiting on parts, pool went green. I did what everyone does and bought 24 1 lb bags of shock granules from Sam's club and started dumping them in (and brushing daily) and added 4 pucks for good measure in the chlorinator which of course worked to a point. It turned bluish white but got no better. I had a simple test kit so I was really only getting pH and fc readings. I found ur site and immediately ordered the tf 100 kit which took its Sweet time getting here. I did start putting liquid bleach in trying to guess what to do. I added 4 121oz jugs the first day and then 2 more in am and 1 more in pm. Repeat for 2 more days. I finally started seeing FC above 5 which is max of old kit. Today, took first CYA measurement and got 90 to 100. FC is 20.5 and CC is 0.5. PH is 7.5. Looking at chart it seems my FC is low for shock value but it seems my CC reading is good. I will let the experts give me a plan of what to add in the am. BTW, my wife told her mom I was using bleach, to which she said I would ruin the liner. Sheesh.