Grodan Gro-Block Improved Big Mama, 8" x 8" x 8 " (Case of 18) rock-bottom The ducting can be shortened

The ducting can be shortened by cutting the tube to fit various applications

WD-PT-04 Water Filter Pitcher

but it's also food safe

or favour intermittent mixing

Grodan Gro-Block Improved Big Mama, 8" x 8" x 8 " (Case of 18) rock-bottom The ducting can be shortenedGrodan Gro Block Improved Big Mama, 8" x 8" x 8 " (Case of 18) 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 volume.