Grodan Rockwool Delta 4 Gro-Blocks - 3x3x2.5 inch
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Products Description

Grodan Stonewool Delta 4 Gro-Blocks - 3 x 3 x 2.5 inches. Individual growing cubes for final stage of cloning and plant growth. Holes are perfect size for Grodan A-OK 1.5 inch starter plugs. And small plants can even be fully grown in the larger Gro-Blocks.

Grodan Growing Cubes are the most uniform blocks available on the market. They feature improved grooves at the base to promote better drainage. They are available in a large assortment of sizes and configurations to suit all types of plants. Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers. The purpose is to support the requirement of the plant in the different plant stages. Grodan has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen for rapid plant growth.

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