I was in the middle of shocking last week and getting no where because my pump was not working properly. I ordered a new bigger pump got it installed but couldn't get it to work for 3 days, so there the green water sat. I poured a jug of bleach in and brushed often, because I had no chlorine in the pool at all it was at zero! Finally got pump running last night. My FAS-DPD last night was 16.5, this morning it is 15, so I did lose some.
Today's test results"
PH - 8.2
TA - 220
CYA - 30
FAS-DPD - 15
Clearly I need to add dry acid to bring down PH. I have a SWG so there is no scale for a CYA of 30 so I am going by the non-SWG chart which means Shock should be 12 and mine is 15, but I DID lose some of that overnight, so should I let it get down to 12 and hold or add more bleach? What chart should I go by?
This morning I can already see a difference in the color of the water, heading in the right direction.
Thank you and Happy Easter!