2" Rockwool Starter Plugs Bulk Case, 30 Sheets of 50 Plugs (1500 Plugs Total) + Twin Canaries Chart

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• Made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs
• Has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen for rapid plant growth
• Seedlings or cuttings started in the Grodan cubes can also be transplanted into more traditional planters and growing mediums
• Twin Canaries Chart included with every order!