I'm downsizing from a 260 to approximately 150 gallon display with intention of making it an SPS dominant tank. And I plan to use Triton method to dose elements. So my question is centered around alkalinity controllers and automating the dosing using slave dosing pumps. Focusing my attention on the Alkatronic/Dosetronic/future Mastertronic and the Apex/Trident/Dos. Both have similar skip or selective dosing based upon consumption. And I understand that even though Trident measures all Ca, Alk and Mag that selective dosing is still based on Alk. Aside from the obvious product availability is there an advantage to going with one over the other?