I have a 26,000 gallon salt water pool, Jandy PLC-1400 salt cell, and keep the salt level at about 3000ppm.
I normally keep the SWG set to 75% and that gets me a total chlorine level of 3-5. However, several months ago, I replaced the Jandy stealth pump with a Jandy e-Pump and a Jandy sand filter -- my previous DE filter developed a crack in the Texas freeze last year and our pool service company said DE filters are backordered for 6 months.
This is all working well, but I noticed that the SWG is making far more chlorine than it has in the past, especially with the fall drop in water temperature. Several weeks ago, I noticed the chlorine level was through the roof (over 10ppm) so I lowered the generator to 25% and it was still between 5 and 10ppm. I have now lowered it to 15% and it's finally coming in about 5%.
It never behaved this way before -- I'd lower it to 50% for the winter and that was fine. The pump runs about 7 hours a day.
The other change from last year is we took out two giant Lacebark Elm trees that died in the Texas snowmageddon. They shaded the pool, so now the pool gets a lot of direct sun and much less stuff falls into it in autumn although that usually didn't get bad until mid-December. I don't recall ever seeing a chlorine level this high. CA level is fine according to the test strips.
Could the new ePump and filter somehow have made the SWG that much more more efficient? The cell is about a year old and it's due for a cleaning. Also, does scale build up only when it's running, or is that a function of the salt water passing through it?
I normally keep the SWG set to 75% and that gets me a total chlorine level of 3-5. However, several months ago, I replaced the Jandy stealth pump with a Jandy e-Pump and a Jandy sand filter -- my previous DE filter developed a crack in the Texas freeze last year and our pool service company said DE filters are backordered for 6 months.
This is all working well, but I noticed that the SWG is making far more chlorine than it has in the past, especially with the fall drop in water temperature. Several weeks ago, I noticed the chlorine level was through the roof (over 10ppm) so I lowered the generator to 25% and it was still between 5 and 10ppm. I have now lowered it to 15% and it's finally coming in about 5%.
It never behaved this way before -- I'd lower it to 50% for the winter and that was fine. The pump runs about 7 hours a day.
The other change from last year is we took out two giant Lacebark Elm trees that died in the Texas snowmageddon. They shaded the pool, so now the pool gets a lot of direct sun and much less stuff falls into it in autumn although that usually didn't get bad until mid-December. I don't recall ever seeing a chlorine level this high. CA level is fine according to the test strips.
Could the new ePump and filter somehow have made the SWG that much more more efficient? The cell is about a year old and it's due for a cleaning. Also, does scale build up only when it's running, or is that a function of the salt water passing through it?
