Grodan Improved GR40 Uniblock, 8 x 8 x 4, case of 36 Aeroponic Canvas Density: 210D

Canvas Density: 210D

Urea: This nitrogen source is carefully integrated to gradually release nitrogen

The product comes in a 5lb bag

DLC + ETL Listed: Full certification stack for utility rebate eligibility and commercial code compliance

4 ft x 100 ft roll: Enough to net several beds

Grodan Improved GR40 Uniblock, 8 x 8 x 4, case of 36 Aeroponic Canvas Density: 210DGrodan Improved GR40 Uniblock, 8 x 8 x 4, case of 36 Growershouse. com is proud to introduce the Grodan Improved Uniblock GR40, the culmination of extensive research and partnerships with top institutions and growers. Created in collaboration with the Wageningen University and Research facility in The Netherlands, and with feedback from leading North American growers, this product represents the pinnacle of stone wool substrate technology. Key