Henry M.
This set of three trays make growing microgreens so easy, i had tried a couple of others but they did not work out nearly as well, possibly because these Nufields trays are a perfect set for microgreens success, the green one keeps the coco coir , this one has holes in the bottom and this is placed into the black waterfeed tray, and the third black tray goes on top of the green to promote growth.....I have great success with my first efforts.