Gro Block Improved Large GR5.6 w/ hole (3x3x4) (Full case - Shrinkwrapped strips) DaKine 420 The result of months of

The result of months of scientific research and trials is Grodan Gro-Blocks Improved with our Advanced Wetting Agent

9 µmol/J PPE: 340 µmol/s PPF in a 46-inch bar form — useful flux for lower-canopy supplementation without adding tent heat

because they do not pull air through a mesh on the filter's body——the filtration occurs within the interior of the filter body

sustainable

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