RedRock Starter Block PRO, 4" x 4" x 4" (Case of 144) king while the single-bucket Root Spa

while the single-bucket Root Spa systems use a single dedicated air pump

Retractable drawer handle is concealed when not in use for a clean and professional appearance

Product Model: AC-PFP10

A double cuff vent and 20% oversized vents for good air circulation

Through the years of testing and research

RedRock Starter Block PRO, 4" x 4" x 4" (Case of 144) king while the single-bucket Root SpaRedRock 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