Dear members,
I have just encountered the following issue.
I have a new SWG generator (Pentair Intellichlor 40). 15 days ago all my water chemistry levels were (almost) perfect, i.e. 3,600 ppm salt... but CYA was on the low end around 50 ppm
. I did not find the time to slowly bring it up to 70, and then there several straight days of heavy rains, in excess of 230 mm, then a week of sunny days (not a single drop of rain). I noticed a dramatic drop in Cl levels, then tested for CYA and realized that it went down as low as 35, this is when I got hit in the face with the fact that the SWG was not keeping it up.
Yesterday I tested salt levels (twice) and it is currently 1,600 ppm !!!... I then added enough CYA to bring it back up to 70, and today added 2 gallons of 5.25% bleach (pool is 11,800 gal). I shut off the SWG just as a precaution in order to stabilize, first the CYA and Chlorine via external source like bleach.
My question is, when I started up the SWG I added 330 pounds of salt to my pool, and the SWG green light was fine... tested one week later and it was 3,600 ppm as mentioned above. Now, since I depleted the Cl from the NaCl in the pool (for not having proper CYA levels), will I need to add more salt (i.e. 200 lbs as per PoolMath) to stabilize chlorine production...???, or by adding bleach and starting up the SWG again, will effectively (say) bring back NaCl levels to my original 3,600 due to "rebonding" of existing Na in the water and externally added Cl... maybe I will need to add some lbs of salt at the end of the day to compensate for the brutal dilution.. but for the sake of conversation let's say no dilution ever occurred and Cl just broke down due to heavy sun and very low CYA.
Many thanks in advance for your help and advise.
I have just encountered the following issue.
I have a new SWG generator (Pentair Intellichlor 40). 15 days ago all my water chemistry levels were (almost) perfect, i.e. 3,600 ppm salt... but CYA was on the low end around 50 ppm
. I did not find the time to slowly bring it up to 70, and then there several straight days of heavy rains, in excess of 230 mm, then a week of sunny days (not a single drop of rain). I noticed a dramatic drop in Cl levels, then tested for CYA and realized that it went down as low as 35, this is when I got hit in the face with the fact that the SWG was not keeping it up.Yesterday I tested salt levels (twice) and it is currently 1,600 ppm !!!... I then added enough CYA to bring it back up to 70, and today added 2 gallons of 5.25% bleach (pool is 11,800 gal). I shut off the SWG just as a precaution in order to stabilize, first the CYA and Chlorine via external source like bleach.
My question is, when I started up the SWG I added 330 pounds of salt to my pool, and the SWG green light was fine... tested one week later and it was 3,600 ppm as mentioned above. Now, since I depleted the Cl from the NaCl in the pool (for not having proper CYA levels), will I need to add more salt (i.e. 200 lbs as per PoolMath) to stabilize chlorine production...???
, or by adding bleach and starting up the SWG again, will effectively (say) bring back NaCl levels to my original 3,600 due to "rebonding" of existing Na in the water and externally added Cl... maybe I will need to add some lbs of salt at the end of the day to compensate for the brutal dilution.. but for the sake of conversation let's say no dilution ever occurred and Cl just broke down due to heavy sun and very low CYA.Many thanks in advance for your help and advise.
