Grodan Rockwool A-OK Starter Plugs gift-guide (3) 360° spray jets on

(3) 360° spray jets on threaded barb

ThermaGlas Technical and Installation Guide (PDF)

Operating pressure range: 10 to 50 PSI

even heat directly to a plant's root zones

Grodan Rockwool A-OK Starter Plugs gift-guide (3) 360° spray jets onGrodan A OK Starter Plugs are designed for starting seedlings and rooting stem cuttings. The finely woven stone wool in the Starter Plug provides the perfect environment for young roots. Square plugs form a sheet that fits standard 10 by 20 trays, with tapered bottoms that support transplanting and promote uniform root development. Grodan plugs have excellent uniformity, strength and shape that provides the perfect basis for optimum germination and