Grodan Rockwool – 4x4x2.5in. Cubes, 6 pack w/holes

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Grodan Rockwool – 4x4x2.5in. Cubes, 6 pack w/holes

$9.69 (as of June 24, 2019, 6:45 pm)

hydroponic growing medium
good for seedlings and cuttings

Usually ships in 1-2 business days

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.
hydroponic growing medium
good for seedlings and cuttings

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