Grodan Gro-Block Improved GR6.5 Small with Hole, 4" x 4" x 2.5" (Case of 216) Sprayers and Wands Included Nozzles: The pump comes

Included Nozzles: The pump comes with two interchangeable nozzles

These industrial combination pH or ORP sensors use the conventional measurement technique

Capability to adjust air flow

Total CFU of microbes

Grodan Gro-Block Improved GR6.5 Small with Hole, 4" x 4" x 2.5" (Case of 216) Sprayers and Wands Included Nozzles: The pump comesGrodan 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