Grodan Improved GR40 Uniblock, 8 x 8 x 4, case of 36 Aeroponic so fresh media is the

so fresh media is the simplest way to keep output up

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

These are food grade nylon

1200+ IAV Ducting 6 in x 25 ft

The product comes in a 5lb bag

Grodan Improved GR40 Uniblock, 8 x 8 x 4, case of 36 Aeroponic so fresh media is theGrodan 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