Grower's Edge Block Covers 4 in (40/Pack)

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12331
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Grower's Edge Block Covers 4 in (40/Pack)

For blocks of rockwool and other grow media. Grower's Edge® Block Covers block light from media—which helps reduce algae. Use white side up to reflect light. Use toothpick to hold cover in place. Hole in center of cover measures 1/2 inch in diameter.
More Information
Length 5
Height 0
Width 4
Weight 1.000000
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