Grodan Improved GR40 Uniblock, 8" x 8" x 4", case of 36 nutrient rich Can be used for either

Can be used for either the carbon or sediment filter

Increase release quantity for moderate to severe infestations

EACH CASE MASTER CASE PALLET Qty: 1 4 0 9 Weight (lb): 10

The RAY44 is designed to function as a complete sole-source lighting solution

yielding 70% energy savings versus the 1000W HID lights they replace

Grodan Improved GR40 Uniblock, 8" x 8" x 4", case of 36 nutrient rich Can be used for eitherGrodan Improved Uniblock GR40, 8" x 8" x 4" 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 optimal fiber structure and