I have a Hayward CL220 inline chlorinator and I'm wondering what setting others are using? The adjustment dial goes from 0 to 10.
My pool is 16'x32' approx. 22,000 gal. and I'm running my pump 4 hr. in the morning and 4 hr. in the evening on 1,800 RPM.
I keep the chlorinator filled to the top with pucks and have tried 3.0 for a few weeks, which seem to keep the free Cl about 2-4 ppm and then suddenly one day it dropped to 0 ppm and I didn't notice until an algae bloom had occurred. I've now got it on 4.0 setting and free Cl is up to 16 ppm, so I'm having a hard time finding a stable setting.
If anyone could share their setting, along with how many hours per day their pump is running and their pool volume, that would be helpful!
Oh and on a side note, after my algae bloom I shocked and killed all the algae quickly, but my sand filter was not doing a great job of pulling out all the dead algae. So I tried a product called Sparkle Up from BioGuard, it's a very fine powder that's added to the skimmer to improve the filtering efficiency of sand filters. I only had to use 4 small scoops and it worked extremely well and cleared my water up instantly. It made my water brilliantly glass clear. I would highly recommend this to anyone with a sand filter!