CLONE PRO propagation trays are the perfect start for seedlings and cuttings. CLONE PRO includes a bottom tray and comes with the option of a 36 star-cell tray or a 50 cell tray. Although the trays are pre-moistened, we recommended extra watering ahead of use to ensure optimal moisture levels and stem contact with the Preforma media. Repeat cycles of semi-drying and watering to promote root growth.