Calculate granular dichlor required to raise Free Chlorine.
This calculator estimates how much granular dichlor is needed to raise Free Chlorine by a selected amount. Enter the pool volume and the desired FC increase to estimate the required dose.
Dichlor contains both chlorine and cyanuric acid (stabilizer). Every treatment raises FC and gradually increases CYA, so repeated use changes more than one water balance number.
Dichlor dissolves quickly and is useful when both chlorine and stabilizer are needed. However, continued use can raise CYA high enough that the pool requires higher FC levels to stay properly sanitized.
Yes. Every dose adds cyanuric acid along with chlorine.
If your CYA is already at the desired level, liquid chlorine usually avoids unnecessary stabilizer buildup.
Dichlor is a great startup product, but don't forget it quietly raises CYA. Keep an eye on your stabilizer test so you don't create a bigger chlorine-management problem later.