Grodan Improved Gro-Block, Jumbo 6" x 6" x 4" (Case of 64) 3m Half Face Respirator Calibrate after cleaning and/or storage

Calibrate after cleaning and/or storage before testing to adjust for changes in the pH sensor

DES-X may be used on edible crops up to and including day of harvest after a minimum spray interval of 12 hours

6 Amps/520 W

Case of 400

Grodan Improved Gro-Block, Jumbo 6" x 6" x 4" (Case of 64) 3m Half Face Respirator Calibrate after cleaning and/or storageGrodan 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