Hey
@RadiatedReef , I am not 100% sure you are asking, but my preference for tuning a calcium reactor is not using a controller to regulate dosing, I rather measure the consumption of your tank and the effluent of your reactor, to determine your flow and effluent needs. I do keep a PH monitor on my calc reactor to know that the PH remains steady and at a melting point for the crx media.
Measure your Alk in your tank and the Alk of your effluent from your Calc Reactor. Wait 2 days, measure your Alk again. Be sure to measure the alk approximately the same time of day as you did in the first test for a more accurate reading. Also, if you're not using a periplastic pump to pull your effluent from the reactor, you will have to measure your flow ml/min. You can easily do this with a graduated cylinder you find on Amazon for cheap. Once you get that info, you can go here:
http://reef.diesyst.com/reactor/reactor.html. There is a tank volume calculator there as well, if you need help calculating actual water volume. Key all your info in on the #2. Adjust the Reactor side and it will tell you what you need to adjust your effluent rate to be.
Also, personal experience and seen many CRx users suffered the same, the AquariumPlants Carbon Doser, while easy to use, is a single stage regulator. When the tank starts to get low, it will dump co2 into your reactor causing a spike in alk. When it happened to me, I reef controller alerted me and I took it offline immediately. I now use a dual stage regulator and never have to worry again.
