Grodan Rockwool – Cubes, 6 pack, w/holes 4x4x4in.
August 1, 2010 by Our Weed Editor
Filed under Nutrients and Growing Supplies
Grodan Rockwool – 4x4x4in. Cubes, 6 pack, w/holes
Price: $10.50
Rockwool is an inorganic and sterile growing medium made from spun molten rock. A superior medium for rooting cuttings, rockwool provides 20% air space when saturated, and does not contain nutrients. It is recommended that rockwool be conditioned by soaking for eight hours in a pH 5.0-5.5 and then rinsing with pH 7.0 water. Water daily.
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