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  1. PoolSleuth

    Boric Acid Measurement in Pool Math?

    I just added 50 lb of boric acid to my 26,000 gal in ground pool. I understand that with boric acid added, the chlorine demand is 5% of CYA vs 7.5% of CYA without boric acid added. Is there a way for the pool math app to expect/demand less chlorine after boric acid is added, taking that into...
  2. PoolSleuth

    Calcium Hardness Success!

    Wanted to share a TFP Victory Story, involving my addition of Calcium Chloride. My 26k gal in-ground concrete pool (chlorine, not salt) was running Calcium Hardness of 200ppm. I bought 50 LB CC from Amazon. I added to 3 gals of pool water in a 5 gal bucket, 12 LB at a time, then stirred for...