I can't seem to get my Ph up. I am averaging 7.79. I run Kalk through my ATO at 1.5 tsp per gallon. My Alk average is 10.3 and my Calcium 410. My first thought is that I have high Co2 levels in my house. The house is sealed up pretty tight. Yesterday I ran an airline from my Skimmer to the exterior of my house. It's been about 24 hours so far with little to no improvement. I was really hoping the exterior skimming line would help. If I bump kalk to 2 tsp per gallon my alk get a little too high at about 11.3. Any ideas?