Sanity Check: Running Chlorinator at 100%

[LAFelipe]

We finished our pool construction early January and I've been running it with the help of TFP ever since. I believe we have a problem with our salt generator, but since I'm new to all of this I'd like to hear your thoughts before I go through the warranty claim. From April 7 to now, I slowly have had to increase our salt cell production from 40% to 100%, all while continuing to run the pump for 8 hours a day. At the start I didn't think much of it, since the weather has been getting nicer, and with the solar heater we've been hitting water temps of 86-87 degF almost every day. Yesterday, while the salt cell was set at 100% production, my FC readings were 4.0 in the morning and 4.0 in the afternoon. This morning, FC was 4.0 again, but after the family went for a swim it went down to 3.5. Below you will find my test results which will hopefully complete the picture of the situation. Is there something I am missing here? Thanks for your time!

Latest Test Result Summary
FC: 3.5 (17 minutes ago)
CC: 0.0 (2 days ago)
pH: 7.9 (17 minutes ago)
TA: 80 (2 days ago)
CH: 450 (2 days ago)
CYA: 70 (2 days ago)
SALT: 3400 (2 days ago)
TEMPERATURE: 88° (2 days ago)
CSI: 0.25 (17 minutes ago)

 

[JoyfulNoise]

TFP recommends sizing your SWG cell at 2X your pool volume. Your T-9 cell is a bit too small. It can’t produce enough chlorine to keep up with the demand. You either need to run your pump (and SWG) more hours/day or get a bigger cell. Pool Equipment manufacturers size their cells based on EPA FC levels(1-4ppm) and running a pump/cell 24x7 at 100% output. Manufacturer specs are unrealistic at best.