This website has become my go to resource for all things pool related, so I feel confident I can get an accurate answer on this subject. Have been regularly monitoring chemical levels since a real bad CYA, and just bad water forced me to perform a costly $$$ full drain. Just as a sanity check, I will take a water sample in for a second opinion every two or three weeks to two different local pool stores, one a national chain, and the other a small locally owned business. I'm seeing alkalinity slowly creep up, until it's what I measure as a 140-150 level. Well the local pool store uses a term in their report called "Alkalinity (w/ stabilizer correction), and that takes my 140-150 reading and says it's 114, which is within the band I'm trying to maintain. Maybe I've just missed it, but I've never seen anything on this website that says subtract 25% from your swirling green to red alkalinity measurement. SO my question is, is there anything to this claim that stabilizer adds about 25 points to your alkalinity reading??? My cyuranic acid is at 50.