Calculators again


TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
Silver Spring, MD
My understanding is that BleachCalc always shows liquids by volume and solids by weight. My calculator shows solids by both weight and volume, but the weights will be more accurate. Powders can be fluffed up into larger volumes or packed down into smaller volumes and ground differently so that they pack differently.


The author of Bleachcalc, MWSmith, has acknowledged that there is an error based on the information he used when he wrote the program. It is the only known error in the program.


LifeTime Supporter
Jun 11, 2007
Springfield IL

Well I was thinking of adding borax to increase Borates to 50. But with a 25000 gal pool, that works out to 92lbs of Borax and 5 gallons of Acid. This pool is in the Midwest so spring cleanup is always an issue. Now I just dont know what to do. Hum. I assume the Borax will only need to be replentished due to backwash and splashout.