I want to add borates to my 10 month old pool. I've read as many articles about it on TFP as I could find, and am excited about making the addition. I just ordered the 55# pail from Duda ($82.44). So being the intelligent person I am (not), I later checked out Pool Math, and it calculates I will need 84#s. (using 23K for pool gallons) So much for paying attention to what I read.... In my head, I just knew 55#s would be plenty.
Here's my question: When I did the part at the bottom of Pool Math, "the effects of adding chemicals...", I put in 1354oz of boric acid. It calculated it would raise the borate level by 77. Why is that so different from my goal amount of 50 and the amount it calculated to add?
I'm planning to add only the one pail and try to test the level. I can order more and add later, right?