Allows a rockwool user to seamlessly stack a 4 in cube on top of a 6 in cube or a 6 in cube on top of a 8 in cube—blocking light and eliminating algae, all while allowing in the necessary air a plant needs to thrive.
Grodan PRO Starter Mini-Blocks 1.5 in Unwrapped (50/Cs)
Grodan Classic Slab 30/75 12 in x 3 in x 36 in (8/Cs)
Grodan Cress Plate Propagation Mat 10 in x 20 in (95/Cs)
Grodan Delta 4 Block 3 in x 3 in x 2.5 in w/ Hole (48/Cs)
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