Why does my chlorine keep going away

[Beth0277]

That adds 2.6 ppm FC IF the cell is on 24 hours per day. In your climate that should be enough right now IF your CYA is at or above 60 ppm and your pool is completely free of organics. I would move it to 80% in the next week or so then monitor FC every day or two.

Thank you! If the overnight chlorine loss test is positive, then we shock it?

 

[mknauss]

If you lose more than 1 ppm FC overnight, or the pool water is cloudy, you follow theSLAM Process. Read the article.

 

[Beth0277]

Okay - overnight test results:

10 pm - 8.4
6 am - 5.8

This means algae, right?