Grodan Gro-Block Improved GR6.5 Small with Hole, 4" x 4" x 2.5" (Case of 216) Plant Care/Pest & Disease Control it offers convenient access for

it offers convenient access for real-time adjustments from your smartphone or tablet

Directions for Use: Expand your organic coco using your usual vegetative nutrient solution and increase the recommended dosage of desired cal mag by two times

Lumen:52828

• In a recirculating or waste to drain system

this RO system can reduce TDS

Grodan Gro-Block Improved GR6.5 Small with Hole, 4" x 4" x 2.5" (Case of 216) Plant Care/Pest & Disease Control it offers convenient access forGrodan 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