I finally got it right. Now I just need to figure out the dosing to keep it that way. Weekly tests for a while I guess. But I am so happy that it's where it should be now. Great starting point:-D
Trial and error is the best way to see what is needed in terms of alkalinity dosing. Calcium dosing can be determined from that, or by using a fixed ratio, such as limewater (kalkwasser) or a two part system.