Grodan Rockwool 1.5 Macro Plugs (Pack of 50) – PowerGrow Systems & Utah Hydroponics

Stonewool Macroplugs are a sure bet for optimum germination. They start as basalt rock and chalk that is melted, spun into cotton candy-like fibers, and finally compressed into plugs. Their fibrous structure creates an ideal air-to-water ratio which contributes to robust root development throughout the entire plug. If you're ready to experience phenomenal growth with premium rockwool - the Grodan Macro Plugs are your gateway to better growing.

Item Number: 10120

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An inorganic and sterile growing medium made from spun molten rock A superior medium for rooting cuttings Provides 20% air space when saturated Does

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Macroplugs are 1.5 round with a slit that allows easy insertion of a cutting. These loose round plugs fit perfectly into the Gro-Block hole. For best results with these Macroplugs always insert them in a tray with individual cells. The individual cell will make sure the plug stays closed around the stem of your cutting.

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