Grodan Gro-Block Improved GR10 Large with Hole, 4" x 4" x 4" (Case of 144) leds Fire Point ASTM D92 263°C

Fire Point ASTM D92 263°C

Maximum Height: 7

non-slip handle

fragrance and swelling

Grodan Gro-Block Improved GR10 Large with Hole, 4" x 4" x 4" (Case of 144) leds Fire Point ASTM D92 263°CGrodan Gro Block Improved GR10 Large with Hole, 4" x 4" x 4" Case of 144 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 substrate