Oasis Horticubes LC-1 (1 in Thin Cut)Versatile growing medium for consistent seed germination, rapid propagation to seedlings, and easy transplanting. For use with hydroponic lettuce, tomato, herb and onion seeds. Open cell medium allows excess water to drain off while also allowing for good airflow for strong root development. Universal hole design allows for rapid seed insertion to the proper depth. Sterile sheets reduce disease concerns. Specifications: 1 inch, thin cut, medium.