Grower's Edge 4-inch Block Covers

$12.95 $4.00

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Size: 4-inch Block Covers
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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.