Planted Tank Guru
Join Date: Jul 2010
Location: British Columbia, Canada
I've never seen a Phosban reactor in actual use, and I'm not at all familiar with it, but I believe that any measure that can increase the exposure and flow of elements which Purigen negates, throughout the Purigen particles to be absorbed by them, should be beneficial.
One note though - Purigen is always used encased in a fine mesh media bag to prevent it's dispersement throughout the tank water - and since the Phosban reactor operating instructions indicate a media bag should not be used in the reactor, my fear would be that because the Purigen particles are so minutely small, that some, or perhaps even much or all of them, would escape from the reactor into the tank directly, or into the tank via a sump if you're using one - and that would make quite a mess in the tank.
Is there a way you could test it out first, say in a large tub, or laundry sink, to see what develops before actually using it in a tank ?