Hello and thank you for such a great resource.
I have a 30,000 GAL vinyl in ground pool with an Aquarite T-cell 15 chlorinator. Been trouble free for years except changing cells more often than I would like. I have an issue just recently where my water suddenly turns cloudy and my local pool store testing the water reveals no free available chlorine. I"ve tried everything including shocking the water (they recommended non-chlorine shock which I added 6 lbs of - no change).
The 2 cells I have are testing 'OK' by the pool store although it seems their effectiveness diminishes over time even though the pool store test reads 'CELL OK'.
This summer especially I am having problems keeping the water clear. Also, I have just replaced the entire control board several months ago on the Aquarite since the current limiter tends to crack and fry after a few years in the heat. Everything is calibrated properly and had been working fine.
The only thing that seems to keep my water clear is actually shocking the pool with standard pool shock, which in the past I had NEVER had to do. When I set the Aquarite to 'super chlorinate' typically there would be well over 5ppm of chlorine in the water within 24 hours. not any longer.
Also, I have 2 cells, one cell is just opened out of the box within the last 3 months.
Free Available Chlorine 1
Total Available Chlorine 2.5
Calcium Hardness 200
Any help would be incredibly appreciated.
Dallas TX area