Grower's Edge Block Covers 4 in – Hydro Worlds
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Grower's Edge Block Covers

Growers Edge
HGC714820-HAW
For blocks of rockwool and other grow media. Grower's Edge Block Covers block light from media?awhich helps reduce algae. Use white side up to reflect light. Use toothpick to hold cover in place. H...
$7.40
$7.40
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For blocks of rockwool and other grow media. Grower's Edge Block Covers block light from media?awhich 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.

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