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Rockwool Block Covers 4″ (40 pk)

$11.33

Out of stock

SKU: 714820 Category:

These 4 inch block covers are great for covering up the exposed part of Grodan, and other growing cubes. If you have been using growing cubes for a while you have probably experienced algae growth on the tops of your cubes, use these block covers to eliminate the algae growth.

There are 40 block usable covers per package.

  • For Rock Wool & Other Grow Media
  • Blocks light from media reducing algae & pest problems
  • Use white side up to reflect light
  • Use toothpick to hold cover in place
Weight 2 lbs