1tanna1

How do I bring the total alkalinity up, without raising the ph? When I first fill my hot tub the ph is perfect (7.6) but the total alkalinity is somewhere between 20 and 30 (should be between 80-120)? I use alkalinity increaser, then my ph goes thru the roof. When I decrease the ph, down goes the alkalinity. I constantly have this yo-yo effect. Any suggestions?