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  1. M

    Pool Math App Question

    From what I’ve read on here, my FC needs to be at 7.5% of my CYA level to effectively sanitize pool water. When I put a CYA level of 60, the app suggests 7ppm as my target FC level. Based on the 7.5% rule my FC needs to be at least at 4.5ppm. I get a little buffer but is the rest of my levels...
  2. M

    Chlorine levels dropping quickly after Shock

    Sounds like a good plan Kelly. The chlorine level hasn’t dropped much at all in the past 24 hours so I may be past the worst of it. I’ve got the pool math app and will be putting it to good use this summer. I’ve got an adjustable return jet coming in the mail this week so I can use it to...
  3. M

    Chlorine levels dropping quickly after Shock

    I opened my pool up two days ago. There was a tear that formed in the cover over the winter and when I took off the diver it was pretty grimey at the bottom. Brown fluffy looking stuff at the bottom and a bunch of worms. We put a bird feeder in the backyard this year and the birds used the...