Grodan RWHUGO Delta Hugo (6 x 6 x 5.8 in.) is large enough to grow out most vegetables and some fruits for the entire lifespan of the plant. Hugo's holes are the perfect size for any 1.5-inch A-OK starter plug or macro plug. When your starter has outgrown its home, showing three leaves, or roots reaching one inch below the cube, Hugo is happy to receive the transplant. Hugo is sold individually with instructions on the wrapping. Hand water or use with drippers or in Ebb and Flow (Flood) systems.