Hi - I just filled my in ground spa with 930 gal of water. I looked at the calculator and all over the forum, but could not find an answer that has a recommendation of how much CYM should be added to a in ground spa when using liquid chlorine. I think 30ppm is correct, but it could be 20ppm or even 50ppm. The directions on the Splash CYM I bought suggested 30ppm, but that could be for a pool.
Thank you.
David
Thank you.
David