RedRock Starter Block PRO, 4" x 4" x 2.5" (Case of 216) rock-bottom highly porous

highly porous

Utilizing bakers' racks for vertical propagation allows you to increase your production by more than 300% without sacrificing additional square footage

Loamy soil with a slightly acidic to neutral pH level is ideal

Refer to the product label for a full list of pests treatable with JMS Stylet Oil

RedRock Starter Block PRO, 4" x 4" x 2.5" (Case of 216) rock-bottom highly porousRedRock Starter Block PRO, 4" x 4" x 2. 5" (Case of 216) 42 40 Hole 10x10x6. 5cm 4 Inch x 4 Inch x 2. 5 Inch Commercial grade stone wool pro starter blocks sourced and manufactured in North America. Our Stone wool starter blocks are made in the USA and processed in Canada Wetting agent ensures nutrients are immediately plant available The high fiber density of the stone wool starter blocks makes better use of water and fertilizers while allowing dry