Great for starting seeds and clones, the Super Starter Float and Grow includes a standard plastic flat and reusable Styrofoam insert filled with 55 Super Starter Plugs. These earth-friendly plugs maximize water retention and nutrient exposure to give plants the best start possible. Use the Float and Grow in a reservoir or ebb and flow system, or simply plant the rooted plugs directly in soil. Replacement Float and Grow Inserts are available separately, or refill an existing base with a 55-count bag of Super Starter Plugs. The Float and Grow measures 21 inches by 10.75 inches by 2.5 inches.