Grodan Gro-Block Improved GR5.6 Large with Hole, 3" x 3" x 4" (Case of 256) spl_spectrumking you usually need additives to

you usually need additives to achieve desired levels for your plants

Disinfecting computer mouse and keyboard

Two SunBlaster 24" 17 Watt 6400K Grow Lamps with Ballasts

Their tunnels are lined with earth worm castings and allow oxygen to reach plant roots

The oscillation range offers total tent coverage and can navigate obstacles

Grodan Gro-Block Improved GR5.6 Large with Hole, 3" x 3" x 4" (Case of 256) spl_spectrumking you usually need additives toGrodan Gro Block Improved GR5. 6 Large with Hole, 3" x 3" x 4" (Case of 256) 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