Covering the hydroton with plastic to induce top condensation

[Ray]

The idea is simply to provide a condensation layer. The guy who originated it used Mylar sheet, and I have used 6 mil polyethylene - in both cases round disks slightly smaller than the pot diameter were used. A slit was cut from edge to center, then a hole big enough to accommodate the plant.

Open it and surround the plant, just on top of any roots and medium. There is no air barrier, so it really has no impact other than leveling the moisture content of the LECA.