Trying to clear a neglected pool. My friend (he grew up swimming in ponds, she did not) left on vacation and asked if I would try to clean up her green pool. It went from black in May when it opened to green now. I started Saturday with lots of 12.5% liquid shock (12 gals over a day and a half) finally the FC appeared to be holding at 10ppm according to their Aquachek test strips. after no noticeable difference in the green color, I took a sample to the pool store for a PINPOINT analysis.
FC - 3.5
CC - 0.2
pH - 7.5
TA - 173
CH - 140
CYA-9
So I can see that while I thought my FC was at shock level, it was not. The CYA is low but the weather has been cooperating no sun just rain and temps in the 70's. Tonight I put the last 2 Lbs of CYA in a sock (the other 2 Lbs I put in the skimmer before I read it can take a week to disperse and I had backwash). Tonight I put in the last GAL of 12.5% Shock, and I put in 72 Oz. of CAL-HYPO 48% because it was there. The Walmart test kit (not recommended) diluted with 1/2 distilled water showed 5-10 ppm TC. I know I need to be patient but I really want to see something other than green. My big Question is when the FC is maintained at shock level how long should it take to change from green to gray or milky. The pool guy said put in 6 bags of shock, and the sand filter was a problem I know it does not filter as well as DE, but does it have anything to do with the green color? Your help will be greatly appreciated.
Thanks
Curt
FC - 3.5
CC - 0.2
pH - 7.5
TA - 173
CH - 140
CYA-9
So I can see that while I thought my FC was at shock level, it was not. The CYA is low but the weather has been cooperating no sun just rain and temps in the 70's. Tonight I put the last 2 Lbs of CYA in a sock (the other 2 Lbs I put in the skimmer before I read it can take a week to disperse and I had backwash). Tonight I put in the last GAL of 12.5% Shock, and I put in 72 Oz. of CAL-HYPO 48% because it was there. The Walmart test kit (not recommended) diluted with 1/2 distilled water showed 5-10 ppm TC. I know I need to be patient but I really want to see something other than green. My big Question is when the FC is maintained at shock level how long should it take to change from green to gray or milky. The pool guy said put in 6 bags of shock, and the sand filter was a problem I know it does not filter as well as DE, but does it have anything to do with the green color? Your help will be greatly appreciated.
Thanks
Curt