I'm just running carbon passive right now and knead it daily. I do have my phosban reactor sitting empty so I think when I change out my zeolites and carbon I will run it in the reactor.
There seems to be conflicting info on carbon even in the zeo guide. In the same paragraph it refers to using zeo in a forced reactor like a phosban or even in the zeo reactor ontop of the zeolites.. but then later on it recommends just using it passive in the sump.
