Grodan Improved GR40 Uniblock, 8 x 8 x 4, case of 36 Water Filters + ROs Systems or any other continuous liquid-feed

or any other continuous liquid-feed growing system

Low maintenance: Fewer moving parts with easy access for cleaning

The 6x12 tray holds up to 72 cells

Humidity<90%

160 degrees Type Pressure-compensating with check valve (anti-drain) Mount Rod mount (rod sold separately) Tubing White Flex PE 5/3mm (0

Grodan Improved GR40 Uniblock, 8 x 8 x 4, case of 36 Water Filters + ROs Systems or any other continuous liquid-feedGrodan 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