RedRock Grow Block w/ Hole 4x4x4inch, 144 case Water Chiller these bags provide optimal drainage

these bags provide optimal drainage and airflow for healthy root growth

which can be costly or inconvenient

it's the perfect solution for tough stains and grime

cold waters of the North Atlantic Ocean

For control and suppression of pest insects and nematodes both indoor and outdoor

RedRock Grow Block w/ Hole 4x4x4inch, 144 case Water Chiller these bags provide optimal drainageStone wool grow blocks are made in the USA RedRock Stonewool grow blocks PRO are priced for commercial agriculture production Stone wool has high fiber density makes better use of water and fertilizers while allowing dry back Each block measures 4 Inch x 4 Inch x 4 Inch with 42 40 Hole