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Previously they were rated at a higher temperature and humidity level based on hydroponic industry standard usage (86 °F
including:
Late fall applications promote healthy root growth and boost resistance to extreme winter temperatures
Use with the HI981421 GroLine Monitor to provide around-the-clock
Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Strip - Wrapped (Case of 24 Sleeves) GR35088 Previously they were rated atGrodan 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 Grodans Advanced Wetting Agent. These leading edge blocks have the optimal fiber structure and physical properties for crop uniformity, more
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