bluebear -n- mrE both just got v/t 4000's
and have good thingz to say about them . i kinda cringed w/the 50.00 every 3-4 mos. on cartridges though . let us know how well the discs work , i saw them myself on scm's site a while back . how big a grow are you trying to combat the odor of ?
peace
crispi