I appreciate you sharing your experience with this.

I'm wondering how long my SWCG can stay off before CL dips below the minimum? I try not to let it dip below 5ppm with CYA maintained at 70-80ppm, and preferably maintain between 6-7ppm for a little wiggle room.

Am I correct that if right now I have to set the SWCG to 70% for 12 hours, then running at 100% I would have to run it 8.4 hrs (12*.7=8.4)? Am I figuring that right?