I've been using Clorox for a couple years now. Had a lot of rain last night and had to drain some water. I forgot to switch the valve from waste to filter, pump was off, I went to work... wife called "pool is 25% empty".. I had forgotten my timer went on an hour after I left. Anyway, my cya is about 10 (maybe). I plan on using 3" pucks in the automatic dispenser to get cya up. How long will I need to run it on "5" in a 15k pool to get cya up to 40?
Also, with cya between zero and 20, does that mean I need almost no chlorine to prevent algae?
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