do you plan on putting the RW strait into the flood tray....
I'd put a lid on the tray...
drill holes into the lid, then get some net pots the same size as the holes you just drilled...
then put a thin layer of hydroton in the net pots with the RW cube on top of that then fill around the cube and up to the top of the net pot..
then place the pot into the hole in the lid..
set the overflow inside the tray so that it just comes to level of the RW in the net pots...
I might also suggest making the tray light proof in nature plants roots don't normally see light so neither should yours...

I've grown this way before it works...r u growin from seed or clones


D:thumbsup: