If I might tag on a related question. After converting to the TFPC method, are there more economical ways to purchase bleach than by the gallon? I'm talking 55 gallon barrel. I consume 3/4 gallon/day of 12.5%. I got lucky and found gallon jugs on sale at Menards for $2, I should have bought every jug because now it's $4. 10% is $3.30 at Ace and 8% is $3.00 at Sam's.
Any other suggestions?