So here is the story, will try not to make this a book.
Approximately 14,000 gal pool
Sta-Rite 2hp P6E6-208L main pump
Jandy CL-580 cartridge filter
Jandy LX400 heater
Jandy Aquapure Ei
Aqualink RS8 RevL
So initially about 4weeks ago we bought the house, it was a chlorine pool. The previous owner I feel never changed the water in the 5-6yrs he had the pool (had it installed in 2006). I have a Taylor 2006 kit and tested the CYA, it was through the roof, we talking 300-350 levels (had to dilute the sample 4:1 just to get a reading). So that meant I had to change about 85-90% of the water to get it down to at least 50 level. So we drained about 95% of it. We filled it back up with fresh water. Then decided at that point Im converting it to salt water. So dropped in about 14bags of 40lb salt which got me to about 4200ppm Salinity. Got the PH to about 7.4 to 7.5 area. Dropped in about 25lbs of Calcium Chloride and that is about 250-260ppm. TA is sitting at 80ppm after adding some Sodium Bicarbonate. CYA is sitting at 50-60 ppm now.
Now that pump (Sta-Rite P6E6G-208L) is a 2hp pump and I got maybe 40-50ft of line on the suction side, so looking at the chart Im probably sitting at 110GPM flow. Im waiting on a flow gauge to arrive so I can put it on the pipe to see realistically how much Im at (Im going to say Im really more like 80-90GPM).
Now at those GPM rates, even at 80GPM and 14,000gal pool I can change the water over in the entire pool in say 3hrs. I run the pump scheduled from 9am to 1pm (so 4hrs). Right now the Aquapure is set to run for 100% of the time during the 4hrs. Each time for the past 5 days I check the FC levels in the pool around 1pm or so, I only have maybe 0.5PPM. Just doesnt seem right since the manual for the Aquapure Ei shows it can make 0.62oz of Chlorine gas per hour at full 100%. Now even if we take that we would make 2.4oz of Chlorine gas for that 4hr period, using the pool calculator, that alone even from 0ppm FC should put me at almost 1.5ppm.
So then I call Jandy support. They tell me I should be running the pump for 14hrs, that seems insane for a pool this small. in 14hrs Id change the water over 4.5x. The tech still insisted I try it. So I said fine, I decided to run the pump for an entire 24hr period. At the end of the 24hr period, I rechecked the FC levels using the FAS/DPD test in the Taylor 2006 kit. Now during that 24hr period again the chlorine generator cell was still set to 100%, so according to the manual I shouldve made 0.62oz X 24hrs = 14.9oz of Chlorine gas. Using the pool calculator, youd expect my FC then to be close to 8ppm if we use the starting point of 0.5ppm when the 24hr period started. So I check the levels, and Im basically at 1.5ppm on the FAS/DPD test. That just seems wrong to me. How is it that after 24hrs of nonstop running that I ONLY have 1.5ppm FC level? Im trying to achieve 4ppm as the TFT recommends, and it seems an impossibility.
I again call Jandy, and the tech support woman claims that I will never get above 3ppm, and personally she has never seen more than 3ppm on a Salt Water based pool unless liquid chlorine was added. I kept arguing with the tech that 14oz of Chlorine gas clearly shouldve put me at 8ppm, she claims no. I dont understand how.
Then she tells me maybe my phosphate levels are high, not sure how that is going to affect my FC. I dont have a test for it and it fresh water out of Atlanta area water, so dont know what my local city water levels for phosphate are. She also then tries to tell me I should instead run a variable speed pump because maybe Im running too much GPM (like 110 according to the Sta-Rite chart) and the chlorine generator isnt able to properly produce gas. I honestly feel that cant be true.
Looking for any assistance here. This kit is only 4weeks old (the Salt water chlorine cell and power pack) and Jandy now wont replace it until I have a pool tech come out to test that its getting proper voltage into the cell, etc, even though I know it is based on volt meter I have, she wont listen to me cause it has to be done by a service tech and that means I have to pay someone just to tell me what I know, flipping Jandy is killing me.
BTW, my water is crystal clear, no algea issues, nothing wrong with it, looks perfect. Side note right now Im only at 0.2ppm based on the FAS/DPD test (been a few days now since the 24hr run I did, back to 4hr runtime).