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RedRock rockwool 4 inch grow block

RedRock Rockwool 4" PRO Grow Block

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$12.99
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RedRock Blocks stone wool blocks offer cultivators, propagators, and commercial growers the opportunity to grow more while using less: less water, less plant nutrients, and less growing space.

Benefits of RedRock Blocks

  • High fiber density
  • High moisture retention
  • Made from US derived raw materials
Each block measures 4-Inch x 4-Inch x 4-Inch with a 42/40 Hole