Quote Originally Posted by mycalpool View Post
Hi Chem Geek

I was looking for a formula for muriatic dosage. Assuming Alkalinity, Hardness, CYA and Chlorine in normal ranges.

If you posted a thread with this info I would appreciate pointing me to it.

I was looking for something that would take
pool size in gallons
% concentration of muriatic acid
and lowering PH 0.2 ppm
TA also needs to be taken into account. That is why the only way to know how much acid will effect a particular pool is with an acid demand test. Otherwise you can use a ballpark figure of 1 pt /10k gallons as starting place, assuming TA is within normal range. IF TA is high then more might be required and vice versa.