Mother Earth Perlite #3 Size:4 Cubic Feet It also includes a 4°F

It also includes a 4°F buffer to prevent the fans from being turned on and off too rapidly due to minor temperature fluctuations

ensuring adequate clearance for airflow intake and exhaust

as excess wind can potentially damage leaves and stems

Intelligent Programming: With the CONTROLLER 69 PRO

expanded clay

Mother Earth Perlite #3 Size:4 Cubic Feet It also includes a 4°FMother Earth Perlite #3 measures 1 2 inch. Mother Earth Perlite is naturally occurring siliceous rock that expands up to 20 times its original volume when heated to 1600 F. This kilning process is very similar to popping popcorn and produces a growing media that is sterile and has a neutral pH of 7. 0. The exceptional physical properties of this perlite make it tops in the perlite world for adding porosity to soil and soilless mixes. This perlite has