Hi, my 30K gallon pool was opened on Monday and was filled with algae (couldn't see the bottom step in the shallow end) and muck (permeable cover). I followed the SLAM procedure, and it worked great. I used about 9 to 10 gallons of 12% liquid chlorine over the course of the week with daily backwash (sometimes twice in a day) as the filter would go from 20 to 30 psi quickly. I ran a Polaris 825 robot many hours a day too. Bottom line is that by this morning, the SLAM is done (clear water, OCLT passed and CC less than 0.5). A pretty intense process actually with all the backwashing and robot cleaning, but the pool required it.
So now the pool is at 10 ppm FC with ~35 CYA. Should I lower FC to ~3.0 using thiosulphate and then test or can I test accurately at 10 ppm FC?
So now the pool is at 10 ppm FC with ~35 CYA. Should I lower FC to ~3.0 using thiosulphate and then test or can I test accurately at 10 ppm FC?
