A plant grow tray system comprising a plurality of trays comprising at least one upper tray and at least one bottom tray is provided. The upper tray is placed inside the bottom tray with upper tray supports between the upper tray and the bottom tray creating a space between the trays. The upper tray and the bottom tray comprise a sealing mechanism to seal the upper tray to the bottom tray. The upper tray has a corrugated profile with crest and trough portions, air holes on the corrugated surface, a drain basin, drain flange, and drain pipe. The bottom tray has an air-flow modifier, air flange, and a drain hole. The system is designed to allow air to be ducted or exhausted from the space between the upper tray and the bottom tray enabling the delivery of conditioned, fresh, or recirculated air directly to a plant.