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 A-OK 25/40 – 1 in x 1 in Plugs (200/Sheet) (30 Sheets/Cs)
GreenGro Pride Lands Premium Potting Soil 1.5 cu ft (60/Plt)
Grodan 1.5 in Starter Mini-Blocks MM40/40 1.5 in x 1.5 in x 1.5 in (3 Strips of 15 or 45 ct) (50/Cs)
Grodan Cress Plate Propagation Mat 10 in x 20 in (95/Cs)
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