Grodan Gro-Block Improved GR4 Small with Hole, 3" x 3" x 2.5" - Case of 384 Drying & Curing Kits Control up to eight devices

Control up to eight devices from fans to grow lights and provide each with their own independent programming

Works Great with Hydroponic & Aeroponic Systems

the calcium mobility and distribution are hindered

your plants get all the nutrients they need

and it can instantly supply us with the change we want to see in our indoor grow room setup

Grodan Gro-Block Improved GR4 Small with Hole, 3" x 3" x 2.5" - Case of 384 Drying & Curing Kits Control up to eight devicesNew 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