Save yourself a fortune by growing on your young plants to establish by spring using the same trays and methods as professional growers youll see fantastic results providing the perfect means of growing on allowing you to water the plants from the base water is contained by the tray and is distributed evenly by the capillary matr r set of 2 watering trays with capillary matting sheetsr use with 40 or 18 pot growing traysr re use season after seasonr ensures even availability of wa