I am new to taking care of the chemicals in our house! I've been trying to raise my alkalinity all summer. The last readings from the pool store were:

CYA = 146
Tot Chlorine = 15
Free Chlorine = 15
pH = 7.5
Total Alk = 38
Adj Total Alk = 0

At their suggestion, I added 50 pounds of Sodium Bicarb (over 3 applications). When I test the water (using my basic Taylor kit) I cannot get my Alk to turn from green to red even after adding 40 drops.

My pool: 20x40/inground/vinyl. We are no longer swimming for the season so the heater is off and the cover is on every day.

Any help/advice is much appreciated!!!!!!!!!