Rockwool Block Covers, 4″, Pack of 40

SKU HGCOV4 Category UPC 10638104945780 (GTIN)
638104945783 (UPC-A)
0.16 lb 0.16 lb 0.16 lb



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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