Q1. I have been reading about Adjusted Total Alkalinity (ATA) concerning Conditioner (CYA), and it seems it's always in reference to Oxidation Reduction Potential (ORP) equipment with a Sensor.
Q2. If I am not using equipment with an Oxidation Reduction Potential (ORP) Sensor and using only Liquid Chlorine 12.5% and in summer One (1 to 2) 3" Tabs a week, do I still need to Adjust the Total Alkalinity?
Q3. I also read that you need to Adjust the Total Alkalinity (TA) when the Conditioner (CYA) is at 50 ppm.
Q4. Would I subtract 1/3 of 50 ppm (16 or17) from the Total Alkalinity (TA)?
Q5. At what Conditioner (CYA) level do you start subtracting the 1/3 from Total Alkalinity?
I guess I am confused as to when or when not to subtract 1/3 of Conditioner (CYA) from the Total Alkalinity.
Liquid Chlorine = 8.0
pH = 7.6
Total Alkalinity (TA) = 90
Conditioner (CYA) = 125 / 3 = 41 or (42)
Calcium Hardness (CH) = 625 (Customer will not let me dump water)
Water Temp = 68
90 - 42 = 48 Adjusted Total Alkalinity (ATA)
Goal of Total Alkalinity = 110 (110 - 48 = 62 ppm of Sodium Bicarbonate to add)
Goal of pH = 7.5
Goal of FC = 8.0 (for southern California summer weather)
Q6. So, to add 62 ppm, I need to add 10 to 11 lbs of Sodium Bicarbonate to get to my Goal of 110 Total Alkalinity in a 14,400 Gallon Plaster Pool?
Q7. Also, Since Sodium Bicarbonate raises pH, should I lower the pH to 7.3 before I add the Sodium Bicarbonate?
Q8. What other Sanitizers are there, that I have to do the 1/3 subtraction with, that have Cyanuric Acid (CYA) in them?
I couldn't post the calculator picture as I do not have a Flickr account.
It seems the calculator is telling me that I do not have to add any Sodium Bicarbonate (Baking Soda) I moused over the Fields and nothing showed up.
Q9. I would think that if the pool is 14,400 Gallons, I would have to add in order to Adjust the Total Alkalinity. Is this correct or did I not do something right with the calculator?