This is my second season with the (newly built) pool. Last year I had my SWG set to 35-40% or so and had good chlorine numbers (1-1.5 or so) and clear water. This year my chlorine numbers have been between .5 and 1.0 and each time I get a reading like that, I bump up my SWG run time, but the chlorine numbers don't seem to change. Here are some numbers:
Salt percentage - 3.3
June 3 - SWG 40% - FC 1
June 10 -SWG 45% - FC 1
June 17 -SWG 55% - FC 1
June 23 -SWG 65% - FC 1
July 1 - SWG 80% - FC 1
July 9 - SWG 80% - FC .5
July 12 - SWG 85% - FC .5
Other numbers from last weekend:
Pump run time - was 12 hours, now 13 hours.
Any idea what's going on here? I'm more than double than I was last year and I'm not maintaining the same levels of chlorine.
One other data point - during one of my low chlorine spells, I did a shock with bleach, but I don't think I turned the SWG off. Could this have ruined the cell?