u/Greedy-Safe9518

Stacking 4x4 cubes on top of 6x6 cubes.

Once roots are penetrating the bottom of the 4x4’ when stacked on top of the 6x6’s the 4 x4’s seem to dry out from a 56-VWC down to a 10-12 VWC within 10-15 minutes. Bottom cubes are fully saturated, air flow is set to a minimum and room is currently at .8 VPD.