Unless one thought that reaction kinetics varied with pH in the reactants,
and pH being a measure of dilution/concentration. Adding 10 units of 0.1M
acid is not the same as adding 1 unit of 1.0M. Dilution, or promoting
faster dilution by broadcasting, matters.


That makes sense, thank you for the answer.

On another matter I would be curious to hear your opinion on the
suggested practice by the industry of superchlorinating a pool every
week. Actually the interval varies depending on who you talk to. I am
under the impression that if you maintain your ORP at 650 then this is
not needed, upsetting the pool industry because you're not buying
these little bags of 75% cal hypo at 3 times the price of the 70%
stuff in your big bucket.