A specialized germinator for seeds and grains. Just fill the top tray with water twice a day. A unique siphon action perfectly controls moisture and humidity throughout. Plants grow upward separately, without tangling as they do in a jar. 8 1/4" tall, 6" diameter. Includes three 1 1/2" tall germination trays. All components of the Bioset Germinator are Bisphenol A (BPA) free.