Grodan Gro-Block Improved GR6.5 Small with Hole, 4" x 4" x 2.5" (Case of 216) lighting-&-electrical-components both are reflective

both are reflective

Its composition includes aluminum flanges and stainless-steel mesh for durability

offering adaptability and functionality in one

Use during the growth phase and the first half of the fruiting/flowering phase

Grodan Gro-Block Improved GR6.5 Small with Hole, 4" x 4" x 2.5" (Case of 216) lighting-&-electrical-components both are reflectiveGrodan Gro Block Improved GR6. 5 Small with Hole, 4" x 4" x 2. 5" Case of 216 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