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.
- Tech Specs
Brand Grower's Edge SKU HGC714820 Weight (lb.) 0.1 Prop 65 No Length (in.) 5.2 Width (in.) 4.2 Height (in.) 0.2 Lead Time Ships in 24-48 Hours UPC 870883008376 UL Listed No