I thought i was an expert - built and serviced pools in my younger days, and have owned 2 in the past 10 years. My current pool is a SWG system (Hayward) and everything was dialed in perfect last year - pump ran about 7 hours at night and 2 hours during the day, chlorinator at 65%.
This year, all was good in may with the same setup, but for the last 6 weeks Free Chlorine (measured by OTO or DPD) is reading close to zero - even with chlorinator at 100% for 12 hours. Even running for 36 hours straight and i only get up to 1ppm. I thought it was the cholorinator as i pulled water of the return line and saw low readings - but the chlorinator numbers (V/A) look good and bucket test shows it is putting out chlorine. I am using the Taylor DPD test kit - and i have run out of ideas. I can keep throwing in a few cups of granular every few days, but that is irritating.
CYA ~ 80
FC = 0 (slight pink from above so maybe 0.2)
TC = 0 - (unless i pull water right off the return line - then it shows FC 1.0, TC 1.5)
PH = 8 - yeah a little high, but shouldn't be a big deal
Phosphates - 0
TA= 135
CH = 250
I am still leaning towards the SWG not putting out enough CL - but no one (even Hayward) wants to tell me what it should put out.
I have a T-15 cell on a ~20K gallon pool. I wound up paying for a service call because the cell made bubbles.
Any ideas to rule in or out the water or cell are appreciated...
This year, all was good in may with the same setup, but for the last 6 weeks Free Chlorine (measured by OTO or DPD) is reading close to zero - even with chlorinator at 100% for 12 hours. Even running for 36 hours straight and i only get up to 1ppm. I thought it was the cholorinator as i pulled water of the return line and saw low readings - but the chlorinator numbers (V/A) look good and bucket test shows it is putting out chlorine. I am using the Taylor DPD test kit - and i have run out of ideas. I can keep throwing in a few cups of granular every few days, but that is irritating.
CYA ~ 80
FC = 0 (slight pink from above so maybe 0.2)
TC = 0 - (unless i pull water right off the return line - then it shows FC 1.0, TC 1.5)
PH = 8 - yeah a little high, but shouldn't be a big deal
Phosphates - 0
TA= 135
CH = 250
I am still leaning towards the SWG not putting out enough CL - but no one (even Hayward) wants to tell me what it should put out.
I have a T-15 cell on a ~20K gallon pool. I wound up paying for a service call because the cell made bubbles.
Any ideas to rule in or out the water or cell are appreciated...