Grodan Improved Gro-Block Big Mama, 8 x 8 x 8, no hole, case of 18 highlifeblack Silicon dioxide (SiO₂) 38-46%

Silicon dioxide (SiO₂) 38-46%

It was brought back into the mainstream from a spore print that was over 20 years old

CONTROLLER 67

The phosphorus in Cyco Swell plays an essential part in photosynthesis

Grodan Improved Gro-Block Big Mama, 8 x 8 x 8, no hole, case of 18 highlifeblack Silicon dioxide (SiO₂) 38-46%Product DetailsGrodan Improved Gro Blocks Leverage 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 Real Real Science Grodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North America to identify