Starting seeds in a separate medium and then transplanting them into your garden is a great way to get your bed planted just the way you want it. A built-in light channel and two adjustable vents allows you to optimize the growing environment for any plant. KIT INCLUDES: - Humidity Cover (22" x 14.5" x 7") - Propagation Tray (22" x 15" x 2") - 72 cell seedling tray (21" x 11" x 2") - 18" AquaSprouts LED Grow Light - 32 Aqua Grow Plugs for seed starting