Grodan Improved Gro-Block, Jumbo 6" x 6" x 4" (Case of 64) Organic That provides the ability to

That provides the ability to have customized lighting spectrum and timing control

AI21040 - GroStar GS4 pH/EC/500ppm/700ppm & Temp (5-in-1) Combo Pen

Energy Factor: 2

replace the cartridge or clean it

Effective as a final flush to clean growing media

Grodan Improved Gro-Block, Jumbo 6" x 6" x 4" (Case of 64) Organic That provides the ability toGrodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North America to identify the optimal stone wool substrate and irrigation strategies for specialty crops. The result of months of scientific research and trials is Grodan Gro Blocks Improved with our Advanced Wetting Agent. These leading edge blocks have the optimal fibre structure and physical properties for crop uniformity, more even