Question on Korallin 1502 calcium reactor.. Pump needed?

[Garage1217]

Hey guys, I purchased a used Korallin calcium reactor from a local. From reading as it has no instructions, the pump has enough suction on the input side to draw water into the unit so no aux pump like a luft pump would be required to circulate water? Am I correct on this or do you guys use another method?

[sonnus]

I would tee off of your main return. You will have more stable performance, build-up in the line won't affect flow as much. I have had the same reactor set up this way for the last 2 years with only few adjustments needed from time to time.