I think that I came across a calculation error this morning on PoolMath. It is in the PH adjustment box. Here are all of the numbers that I have in the system in the format of actual/target
Size = 20000
FC = 5/5
PH = 7.5/7.9 (raising it because I'm getting ready to add boric acid)
TA = 50/50
CH = 200/200
CYA = 35/35
Salt = 2000/2000
Borate = 0/50
Temp = 65
The box next to PH is telling me to add 29 oz by weight or 28 oz by volume of borax. But - If I put the 29 oz of borax (20 Mule Team) in the "Effects of adding chemicals" section, it tells me that the PH will raise by 0.16... not the 0.4 that I have as the differential in the PH section.
Size = 20000
FC = 5/5
PH = 7.5/7.9 (raising it because I'm getting ready to add boric acid)
TA = 50/50
CH = 200/200
CYA = 35/35
Salt = 2000/2000
Borate = 0/50
Temp = 65
The box next to PH is telling me to add 29 oz by weight or 28 oz by volume of borax. But - If I put the 29 oz of borax (20 Mule Team) in the "Effects of adding chemicals" section, it tells me that the PH will raise by 0.16... not the 0.4 that I have as the differential in the PH section.