One of your favorite transplantable growing mediums is now available organically! The new OMRI approved Jiffy Pellets Sheets are available for organic growers, and controlled environment growers. Thats right! You can use these to transplant into hydroponic, aquaponic, and Aeroponic systems. The lightweight plastic sheets hold the pellets in a grid formation while in use. Since the Jiffy pellets are locked into the sheet, they stay put when water is added. Each insert measures 10″ wide x 20″ long, and perfectly fit into our 1020 trays and 22″ x 11″ Perma-Nest Trays. The 36mm come 72 pellets per sheet and expand to 1 1/3 tall.