Grodan Improved Gro-Block, Jumbo 6" x 6" x 4", Case of 64 drying-racks AI21040 - GroStar GS4 pH/EC/500ppm/700ppm

AI21040 - GroStar GS4 pH/EC/500ppm/700ppm & Temp (5-in-1) Combo Pen

Clean white light with >90 CRI

It is also used as a bloom booster in the middle of the flowering cycle by adding more potassium for larger flowers

Stimulates the immune system

When used as a foliar spray in the first weeks of flowering

Grodan Improved Gro-Block, Jumbo 6" x 6" x 4", Case of 64 drying-racks AI21040 - GroStar GS4 pH/EC/500ppm/700ppmGrodan Improved Jumbo (White Foil) 6 x 6 x 4 (Case of 64) Grodan Improved Grodan 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 our Advanced Wetting Agent. These leading edge blocks have the