Q Plug 45/45 - 72 CT BAG - Case of 15The Q Plug provides excellent aeration and buffering for root development with superior water control over other propagation plugs. Q Plug Refill Bags are available in two size plugs: 40 40 and 45 45 sizes and will fit most standard 50 cell trays. The Q Plug propagation plug is specially designed to provide the ideal growing environment for your clones, seedlings, and cuttings in high density or closely populated trays. A strong foundation for your