• Block Covers, pack of 40
  • pack of 40
1 2

Hydrofarm

4 inch Rockwool Block Covers, pack of 40

4 inch Rockwool Block Covers, pack of 40

HGCOV4

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$14.28 USD
$14.28 USD
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  • 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