I opened my pool about 2 weeks ago and had a bit of a green algae issue, nothing severe but the water was a solid green. I shocked the pool the way I was told (this is pre TFP unfortunately) with the granular type of chlorine. Shortly thereafter I discovered this fine site and switched over to the BBB method. The water is clean but cloudy and has been for a week now. I keep trying to shock but if my CYA reading is correct I know it's not enough. I read in the "turn your green swamp into a sparkling oasis" article not to trust a CYA reading from a murky pool. Just last night I drained about 7" and it's just about refilled now. My CYA reading is 20 ppm HIGHER! I did use about 32 oz of Algaecide 50% (because I had it). It's the alkyl dimethyl benzyl ammonium chloride type. Did that affect it or is the cloudy water reading not to be trusted? The sample from the pool does not appear cloudy however. Here are the last test results:
pH - 7.2
TA - 110
FC - >5 (test kit only goes up to 5 and I just put in 6 gallons of bleach 6%; I know, get the TF100)
TH - 230?? (kit says add hardness indicator and sample will turn red if hardness present; it turned more like a pale yellow and when I added the titrant it turned a pale blue after 23 drops)
CYA - 110?? (was 90 before drain/refill)
pH - 7.2
TA - 110
FC - >5 (test kit only goes up to 5 and I just put in 6 gallons of bleach 6%; I know, get the TF100)
TH - 230?? (kit says add hardness indicator and sample will turn red if hardness present; it turned more like a pale yellow and when I added the titrant it turned a pale blue after 23 drops)
CYA - 110?? (was 90 before drain/refill)