I have been reading here about cost savings of bleach... I think in my area bleach is not the cheaper way to go... I just priced a bottle of no-name plain old 6% bleach. It cost $2.85 for 0.75gal. I can buy 12% bulk liquid CL from a local pool store at $7 for 2.5gal.
If my math is correct, by correcting for strength, I need to raise my FC for 20800gal pool from 3 to 24 by adding: 3gal/2qt (453oz) of 12% or 7gal of 6%.
By using bleach, to shock the pool would cost about $25.
By using liquid CL at 12%, to shock the pool would cost about $10.
What am I missing? A better place to buy bleach?