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All-in-one dosing: enter your volume and readings once, get every chemical dose (chlorine, pH, alkalinity, calcium, CYA, salt).

Grade your water from your test numbers and get a fix list linked to each calculator.

Gallons/liters by shape: rectangle, round, oval, kidney.

Liquid or cal-hypo dosing, plus a breakpoint-chlorination shock mode.

Soda ash to raise pH, muriatic acid or dry acid to lower it.

A baking soda calculator for pools: sodium bicarbonate to raise total alkalinity, muriatic acid (aerate method) to lower it.