Grodan Improved Gro-Block Big Mama, 8 x 8 x 8, no hole, case of 18 X Nutrients bloom is the best of both

is the best of both worlds

One case of (8) GC 30 makes 2

This system reduces humidity levels to prevent mold growth while intaking fresh air to push out odors and other harmful pollutants like Radon from your home

and can be used in dilute or concentrated sprinkler or injector systems

9 µmol/J System PPE – Whole-fixture efficiency that outperforms most competing 1000W-class LEDs on the market

Grodan Improved Gro-Block Big Mama, 8 x 8 x 8, no hole, case of 18 X Nutrients bloom is the best of bothGrodan Improved Gro BlocksLeverage the benefits of products developed alongside plant scientists, that are specifically engineered to deliver real results for your crops. Grodan Gro Blocks Improved with Advanced Wetting Technology Grodan's improved stone wool substrate. Keep it RealReal ScienceGrodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North America to identify the optimal stone