Hi everyone,
According to the company that makes my chlorine generator (Pool Pilot), when Phosphates get over 1000ppm, the cell will no longer generate chlorine. I found this to be true last year as I thought something was defective with the cell. When I called Pool Pilot about it to return it for a new one, they asked me what my Phosphate level was. I bought a test kit and it was over 1000.

After reducing the level to 500, the Pool Pilot unit began working again producing chlorine, and I was able to get it to 100. What I don't understand is how the Phosphate level increases? This year, I noticed it climbing again to 500ppm. The only draw back with reducing the level is it increased my calcium level to 500 from 250. Is this bad?

I'm probably going to have to empty half my pool water to lower the Phosphate level since I don't want to increase my calcium level any higher.