Grodan Gro-Block Improved GR10 Large with Hole, Unwrapped, 4" x 4" x 4" - Case of 144 Coco Mats Comfrey is known to be

Comfrey is known to be a nutrient-dense plant with the ability to absorb and store a large amounts of minerals

Flexible Dosage

pH- is designed specifically to reduce the pH level during the Grow phase

Spiral Steel Fin Heating Element For Maximum Heat Exchange

8µmol/J 120-277V 1200W 33

Grodan Gro-Block Improved GR10 Large with Hole, Unwrapped, 4" x 4" x 4" - Case of 144 Coco Mats Comfrey is known to beNew 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. A core component of the "Precision Growing" philosophy, Grodan Gro Blocks Improved with Advanced Wetting Technology allow you to cultivate more uniform and high quality crops while using less water