Block Covers 40 pack
Block Covers 40 pack
Block Covers 40 pack
Block Covers 40 pack
Block Covers 40 pack
Block Covers 40 pack
Block Covers 40 pack
Block Covers 40 pack
Block Covers 40 pack

Block Covers 40 pack

$12.59   $11.96

Blocks light from media reducing algae & pest problems

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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

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