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Pool chemical calculator: doses from your water test. Free, no account.
Pool calculator and pool chemistry calculator that turns your water test into chemical doses. Free dosing. No account. Works offline. Chlorine, pH, alkalinity, hardness, CYA and salt. Enter your test readings, your pool size and the product you have, and see how much to add, with the formula shown for every dose. Works for pools and hot tubs. YOUR POOL, YOUR NUMBERS • Enter your pool volume in US gallons or liters, or let the pool calculator work it out for rectangle, round, oval, kidney or freeform pools with shallow and deep ends • Save the surface and sanitizer type • Hot tub profiles with chlorine or bromine FREE POOL CHEMICAL CALCULATOR • Chlorine calculator, pH, total alkalinity, calcium hardness, stabilizer (CYA) and salt • Liquid chlorine, bleach, cal-hypo, dichlor, trichlor, muriatic acid, dry acid, baking soda, soda ash, borax, calcium chloride, CYA, salt and bromine • Set the strength printed on your product label • Results in fl oz, gal, oz and lb, or mL, L, g and kg SEE HOW EVERY NUMBER IS CALCULATED • The pool chemistry calculator shows the formula and assumptions next to each dose • Step-by-step instructions to add in stages and retest • When hardness, CYA or salt is too high, a dilution calculator shows how much water to replace POOL WATER TEST LOG • Save every water test with notes and the amount you actually added • Charts for each reading • Reminders for your next test GUIDES FOR EVERYDAY POOL CARE • What each reading means, cloudy and green water, opening and closing checklists, safe chemical handling and hot tub care FREE AND PRO Every dose calculation, editing product strength, reminders, one pool or spa and the last 30 days of tests are free. Watch an ad to see full history for 24 hours. Pro adds unlimited pools and spas, full trend history, CSV export, your own product list and removes ads. Choose monthly, yearly (with a 7-day free trial) or a one-time lifetime purchase. Subscriptions renew until you cancel in Google Play. SAFETY Doses are estimates. Always follow the product label. Never mix chemicals. Retest before swimming. Support: halimbox026@gmail.com
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