Calcium reactors might live their own lives a bit(and pH probes and all other things ). So I thinks it's easiest meassure outcoming water from the reactor (dKH) and see how well it's works. I checked our last test and we had around 40 dKH our from one of our CaRx's for example. That's okey I think.So, I have an update, and I'm not sure how I feel about it. I'm dosing over 400ml per day of each 2 part. The calcium reactor is at a pH of 6.7dkh. Alkalinity is holding steady but not climbing. This is ridiculous. Maybe the reactor needs to break in before it starts really adding significant amounts of alk and kalk.
The two things you can play around with are flow and pH. I usually just change the pH and that will give more or less dKH. At the moment our Calcium reactors run with a pH at 6,4. So perhaps you can lower your pH a bit?