Grodan Rockwool is a type of mineral wool created from molten basalt and limestone rock that is compacted into cubes, blocks, or slabs after being spun into cotton-candy-like fibers.
Grodan is a mineral-based substance utilized in hydroponic growth applications because it is manufactured from natural rock.
Can be placed on top of other growing media, such as slabs or cubes of rockwool
Ideal air/water holding ratio for substrate
Uniform plant development
Excellent Root Development across the entire substrate
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