Good plan, we need cross over experiments, mine is spreading, so it seems to take a bit but once seeded it go's
John, it most likely just needs some rough surface to grab on to. Try scratching your original surfaces with sandpaper ro scoring with an exacto blade. JMHO lol
For those of you cyano folks still following this (and Herring too), you might have interest in the waterfall scrubber version which is now being implemented:
http://www.reefsanctuary.com/forums...ver-replaces-skimmer-refugium-everything.html