Grodan Rockwool Cubes (1.5 Inches) 45 Per Pack Review
http://tinyurl.com/kegs5q9
Grodan Rockwool Cubes (1.5 Inches) 45 Per Pack
An inorganic and sterile growing medium made from spun molten rock
A superior medium for rooting cuttings
Provides 20% air space when saturated
Does not contain nutrients
Condition by soaking for eight hours
