Block Covers 6" 40 Pack

In-Store Price: $16.49 Online Only: $13.99
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Six-inch GroXcess Block Covers are white on one side and black on the other to reflect light back to plants while preventing algae growth and deterring root zone pests. Ideal for rockwool and compatible with all growing media. Made of durable 8-mil polyethylene; pack of 40.