Oh yes, 672 oz is what I am calculating at 6%. I originally said 850 because on poolcalculator.com I had calculated going up to 20ppm before verifying in the best guess chart that it should actually be 15ppm instead.

I guess I should not have said "gallon" per say, I just meant "jug", meaning the 128oz bottle of concentrated bleach that I have. So based on this I should add 3 3/4 gallons of the 128oz bleach that I have.

I am more unsure on if it is important to leave the pump running 24/7 during this process or if it really matters or not