Pool Rookie w/ a Green Pool

[lindley]

thank you Ben, but what is "PF" again?

-david

[PoolDoc]

PF = Pool Factor.

It's just a tool for calculating doses quickly, or in my head. It's the ratio of the weight of water in your pool to a pool with 1,000,000 lbs of water (~120,000 gallons).

A 120K gallon pool has a PF of 1, so a pound of added CYA will result in a 1 ppm increase in CYA levels