I think I have reached my max Kalkwasser dose. At 3/4 tsp. per gallon my PH is approx. 8.45. Alk is 8-9 and calcium is 440. I plan on cutting back to 1/2 tsp per gallon so I dont raise my PH beyond where it is now. Question is, can I just add the calcium part of B ionic to keep my calcium in check?