Pool Math and Diclor percent


Bronze Supporter
Aug 18, 2018
Rolesville, NC
Question about the PoolMath app and Diclor. The app only lists “Diclor”. But what percentage does this refer to. Diclor comes in variable percentages especially for spa shock. If it applies to 90% Diclor in the app does that mean if i am using 33% or 53% does that mean the expected rise in FC and CYA would be roughly 1/3 and 1/2 of what the app says it will be?


Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
Laughlin, NV
Be sure the 55% does not relate to 'available chlorine'. If it says that, that is 100% dichlor. Dichlor is right at equal parts chlorine and CYA.