I have a 25000 gallon pool that has been full since the end of July and running with the SWG since the beginning of September. I have been slowly tuning the numbers but have been increasingly more troubled by the SWG settings vs CL output.
I have an IC-40 that was purchased by me on eBay and installed by the PB. It has been on since day 1 but wasn't producing chlorine until I dumped the salt in starting on 9/4. This all seemed very normal to me. After I dumped the salt in and tuned the Intelliflow for enough flow to keep the flow light green I thought I was in business.
The PB had set the initial SWG output to 80% which resulted in CL levels of near 10. I have been slowly reducing the SWG output and then testing the CL levels a day or two later and repeating. I am now at a point that makes me suspicious that something is not right. Please note that due to cold temps we have not been swimming for about 30-35 days so swimmer load is not a factor. Also there is little to no organic material entering the pool. My 4X160 has been running at 1300RPM from 7:00AM until 3:00PM seven days a week for many weeks now. The water has always been crystal clear.
Here is the mostly complete history
DATE..........CL.......SALT.....TEMP......NOTES
9/4............6.5......1770.......79.........after adding 250# salt
9/10..........5.5........3000......78.........after adding 250# salt
9/12..........4.0.................................added acid and 100# salt
9/17..........1.5........3500.......79
9/23..........9.5.....................74.........added acid and CYA
9/24...............................................reduced SWG from 80 to 60
9/25...............................................reduced SWG from 60 to 50
9/26.........11.5
9/30.........10.0.....................76
10/6...........9.0.....................70........added 36oz 31% HCL
10/12.........7.5.....................58.........added 32oz 31% HCL
10/13
10/17...................................62..........added 30oz 31% HCL
10/19...............................................reduced SWG to 3% added 50# salt
10/20.........7.0.....................60
Here's the latest full set of numbers taken with the TF100
FC........7.0
CC........0.0 It's never been anything but 0.0
TC........7.0
pH........7.5 I keep it between 7.4-7.6
TA.......100
CH.......330
CYA.......80
SALT...3500 Not measured since adding 50# last weekend
TEMP......60
Ok that's all the background info...now for the questions. Do I have a problem with my SWG? Is it normal to run at 3% and still get a CL of 7.0?
Thanks
Kevin
I have an IC-40 that was purchased by me on eBay and installed by the PB. It has been on since day 1 but wasn't producing chlorine until I dumped the salt in starting on 9/4. This all seemed very normal to me. After I dumped the salt in and tuned the Intelliflow for enough flow to keep the flow light green I thought I was in business.
The PB had set the initial SWG output to 80% which resulted in CL levels of near 10. I have been slowly reducing the SWG output and then testing the CL levels a day or two later and repeating. I am now at a point that makes me suspicious that something is not right. Please note that due to cold temps we have not been swimming for about 30-35 days so swimmer load is not a factor. Also there is little to no organic material entering the pool. My 4X160 has been running at 1300RPM from 7:00AM until 3:00PM seven days a week for many weeks now. The water has always been crystal clear.
Here is the mostly complete history
DATE..........CL.......SALT.....TEMP......NOTES
9/4............6.5......1770.......79.........after adding 250# salt
9/10..........5.5........3000......78.........after adding 250# salt
9/12..........4.0.................................added acid and 100# salt
9/17..........1.5........3500.......79
9/23..........9.5.....................74.........added acid and CYA
9/24...............................................reduced SWG from 80 to 60
9/25...............................................reduced SWG from 60 to 50
9/26.........11.5
9/30.........10.0.....................76
10/6...........9.0.....................70........added 36oz 31% HCL
10/12.........7.5.....................58.........added 32oz 31% HCL
10/13
10/17...................................62..........added 30oz 31% HCL
10/19...............................................reduced SWG to 3% added 50# salt
10/20.........7.0.....................60
Here's the latest full set of numbers taken with the TF100
FC........7.0
CC........0.0 It's never been anything but 0.0
TC........7.0
pH........7.5 I keep it between 7.4-7.6
TA.......100
CH.......330
CYA.......80
SALT...3500 Not measured since adding 50# last weekend
TEMP......60
Ok that's all the background info...now for the questions. Do I have a problem with my SWG? Is it normal to run at 3% and still get a CL of 7.0?
Thanks
Kevin