Grodan Rockwool A-OK Starter Plugs gift-guide When humidity drops 7% below

When humidity drops 7% below set point

even heat directly to a plant's root zones

9' 8" W x 14' L x 7' 6" H

(2) FA-VBG12 - 12" Horizontal Air Flow Fans

Operating pressure range: 10 to 50 PSI

Grodan Rockwool A-OK Starter Plugs gift-guide When humidity drops 7% belowGrodan 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