Grower's Edge Block Covers 4 in 40/Pack
Free Local Delivery on Orders over $300.
For blocks of rockwool and other grow media. These Grower's Edge® Block Covers blocks 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.
|Dim Weight (in3/lb):||0.0102||0.7808|