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 Expert Slab 15/75 6 in x 3 in x 36 in (12/Cs)
Grodan MacroPlug Round w/ Slit Bulk (2000/Cs)
Grodan 2 in Starter Mini-Blocks MM50/40 2 in x 2 in x 2 in (2 Strips of 12 or 24 ct) (60/Cs)
Grodan A-OK 50/40 2 in x 2 in Plugs (50/Sheet) (30 Sheets/Cs)
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