Grodan Rockwool Sheet 98 Cubes / Propagation Blocks
Grodan Rockwool is a mineral wool made from molten basalt and limestone rock that is spun into cotton-candy like fibres and then compressed into cubes, blocks or slabs. Being made from natural rock, Grodan is a mineral based product used in hydroponic growing applications.
AO 36/40 propagation grow cubes (PLUGS) are designed for seed and cutting propagation prior to transferring to the larger grodan blocks (which the cubes fit perfectly). The AO 36/40 cubes feature a V-shape design that helps to prevent the tangling of roots between the plugs while the plants are growing in the A-OK plug sheet.
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