On the list, but - do you have outside air to your skimmer or CO2 media? I have never noticed a pH hit from a CaRx.Speaking of content... I would love it if you would discuss the pro's and con's of 2 part (or Balling) dosing vs Calcium Reacotors.
Dosing over 250ml per day on my 187g mixed reef am seriously considering a calcium reactor but not happy about the potential pH hit.