Liquid test kits, aka reagent kits, are considered a more accurate measure of pool chemicals ... Toedter says the ideal range for hot tub water pH and TA is 7.4 to 7.6 and 80 to 120 ppm ...

Well water test kits vary considerably ... well water testing kit for those on a budget, but it’s also handy to have on hand when checking the PH of pools and hot tubs—an important step ...