will,
actually, the cuttings in tall bin are not getting "long" node. they are rather compact nodes, but growing faster and taller. on the other hand, the plants in the short bin are growing long node, still not growing as virgorously as the tall node. i thought at first that it's due to clear plastic top that's letting in some filtered sun. but noticed over the weekend, the short bin also gets some filtered sun.. so not too sure.