Grodan Improved Gro-Block Big Mama, 8 x 8 x 8, no hole, case of 18 X Nutrients bloom This system reduces humidity levels

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

Tank's-Pro Potting Mix will simplify preparation of the cultivation area – there is no need to mix anything else in – and ease of mind – it is made with sustainable and renewable materials

feed your plants the legendary Primal Harvest

Active Ingredient: Ulocladium oudemansii (U3 strain) — 5 × 10⁸ CFU/g (minimum)

Grodan Improved Gro-Block Big Mama, 8 x 8 x 8, no hole, case of 18 X Nutrients bloom This system reduces humidity levelsGrodan 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