Quote Originally Posted by headshake
is your rockwool staying damp? you might want to remove the plastic that is wrapped around the cube as this can cause issues. also, how close to the plants is the 400W?

-shake
thx for the help shake yes the rockwool is staying damp. I tried your suggestion and removed the plastic (FYI when I removed the plastic I observed condensation on it). The plants are about 2 feet from the 400w.