Hydroton 50 Liter bags (33/Pallet) (eco-4220) Hydroton 50 lt Bag Clean and dust free Strong pebble structure doesn't crush Color packaging 8-16mm pebble size range Hydroton These expanded clay pellets form a porous growing medium averaging 8-16 mm in diameter. Perfect for use with aeroponic and hydroponic gardens, including ebb and flow tables and systems that use grow cups to support plants. SKU: GMHT50L ( previously GM90050 ) Weight: 44.3 lbs. Package Dimensions: 28.0L x 15.0W x 8.0H Suggested Retail: $34.95 Manufacturer's Product Information MSRP $ 34.95