Rockwool Block Covers – Hydro Worlds
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Rockwool Block Covers

Hydrofarm
HGCOV4-HAW
PLASTIC BLOCK COVERS Reflect light to plant leaves, where it’s needed most. Block light from media. Eliminate algae and mildew growth. 40 dual sided block covers per pack. Works great with GRODA...
$7.02
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PLASTIC BLOCK COVERS
Reflect light to plant leaves, where it’s needed most. Block light from media. Eliminate algae and mildew growth. 40 dual sided block covers per pack. Works great with GRODAN Blocks.
  • Block light from media
  • Reflect light to plant leaves where it's needed most
  • Eliminate algae and mildew growth
  • 40 dual-sided block covers per pack
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