RedRock Starter Block PRO, 4" x 4" x 4" (Case of 144) spl_hf Mix colonized grain and substrate

Mix colonized grain and substrate in a monotub or grow bag

Potassium (K2O) at 5

Energy efficient: To replace T5 54W fluorescent HO lamps

We’ve engineered this OMRI and CDFA-OIM certified solution with freshwater fish protein hydrolysate and soy protein hydrolysate

• Adjustable fan and ducting attachments—no more clamps or reducers needed

RedRock Starter Block PRO, 4" x 4" x 4" (Case of 144) spl_hf Mix colonized grain and substrateRedRock Starter Block PRO, 4" x 4" x 4" (Case of 144) Dimensions: 42 40 Hole 10x10x10cm 4 Inch x 4 Inch x 4 Inch Commercial grade stone wool pro starter blocks sourced and manufactured in North America. Our Stone wool is made in the USA 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 back Our stone wool starter blocks