I just started dosing two part and used the BRS Pharma grade two part system, with the BRS dosing pumps. I definitely recommend calibrating the pumps to see what they are actually outputting. Mine are closer to 1.9mL/min. Both the soda ash and calcium chloride mixed very well, with no precipitant. You also get the jugs, funnels, and spouts too. So far I have not had any issued in my tank, and have seen a nice increase in coralline algae throughout the tank.