Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Strip - Wrapped (Sleeve of 6) Cultured Solutions Coco Cal Our Master controllers do this

Our Master controllers do this

The slim design minimizes sun interference while providing greater access to the plant canopy

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CAUTION: Always mix Dual Fuel 1 & 2 into your reservoir separately

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Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Strip - Wrapped (Sleeve of 6) Cultured Solutions Coco Cal Our Master controllers do thisGrodan 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