Grodan Gro-Block Improved GR5.6 Large with Hole, 3" x 3" x 4" (Case of 256) DUCTWORK Includes 8' 100V/240V

Includes 8' 100V/240V

or other supports without damaging the delicate stems and plant tissue

The iron in Base A is derived from two superior chelates: Iron EDDHA

we recommend using this filter in conjunction with a 4-inch fan

Lumens per Watt (lw/w) - 120

Grodan Gro-Block Improved GR5.6 Large with Hole, 3" x 3" x 4" (Case of 256) DUCTWORK Includes 8' 100V/240VGrodan Gro Block Improved GR5. 6 Large with Hole, 3" x 3" x 4" (Case of 256) New and improved stone wool substrate with advanced wetting technology from Grodan Introducing Grodan Gro Blocks Improved, a product specifically engineered to deliver real results for your crops, developed by plant scientists, researchers, and top growers. The uniform distribution of water and nutrients throughout the block allows for more efficient use of the entire