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Rockwool Pargro QD Blocks 4 in x 4 in x 4 in w/ Holes

A truly groovin' rockwool, Pargro offers an economical alternative to other rockwool products. Two grooves along the bottom of the block allow for superior drainage and aeration, ensuring healthier roots. This is a single strip of six 4" x 4" x 4" Pargro Neptune Blocks.