6 Inch Rockwool Cubes – 6x6x6 Gro Blocks



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6″ Gro Blocks Measure 6″ x 6″ x 6″ – perfect for larger plants. These 6″ Gro Blocks can be used as an intermediary or final container for planting. Individually wrapped cubes hold the rockwool’s shape and prevent algae growth. Grodan A-OK Staters and Macroplugs fit snugly into the pre-formed hole on the top of each 6″ Gro Block.

Out of stock


Grodan 6″ Gro-Block – Improved

New Grodan Improved! Improved product at current pricing. New density + new hydrophilic technology = better water distribution and root development. The uniform distribution of water and nutrients throughout the block allows for more efficient use of the entire substrate volume Full saturation of the blocks with no dry spots and improved EC control with less water is achieved in the rootzone due to the uniform, optimized wool resulting in a sustainable water and nutrient use. Improved “re-wettability” able to more easily increase water concentration in the substrate.

Weight 0.6 lbs


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