Grodan Rockwool Tray With 77 Propagation Cubes eoPAT12 with an infusion of glass Triple chip 3 in with an infusion of glass pieces where the light is going to be filtering out from this adding more color and vibrancy to the way it will help illuminate the space 1 spray pump to each section of the body is required to obtain suppleness and anti aging effects This is a single block system (SBS) cube tray that is ideally designed to hold 77 blocks for seeding or cutting propagation The tray is designed to easily handle a large group of growing cubes to hold young plants until they grow sufficient roots before being transplanted to larger cubes or pots