Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Strip, (case of 144 blocks) MH The pupae are easily recognized

The pupae are easily recognized because the larvae of the Eretmocerus (the parasite) moves the intestines of the whitefly larvae to its periphery

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

In addition to protecting your eyes under the bright lights of your indoor grow

Feed rates vary by media type

Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Strip, (case of 144 blocks) MH The pupae are easily recognizedGrodan Improved Gro Block Improved GR10 Large 4" w Hole 4" x 4" x 4" Strip 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 Grodans Advanced Wetting Agent. These leading edge blocks have the