There is no "trouble" with your pH drifting up (other than needing to keep it down) it's part of the normal operation of a SWC. The cell produces a small ammount of caustic as part of the electrolysis method of making chlorine. It's ALWAYS going to drift up.


The reason higher Cl is needed with higher CYA levels is because CYA inhibits the action of the Cl.

I don't know why they want 80 ppm CYA. I run mine at 40 with no problems.

Michael