A type of vulcanic rock that is commonly used in hydroponics or mixed with soil for increased aeration, usually available from garden centers.

Autoflowering Cannabis Tips & Tricks
The A to Z Of Autoflower Seeds
Roots In Motion: How To Germinate Cannabis Seeds
Bubbelgun Grow Report
In this grow report you will see this grower produce 218 grams off 400w of HPS. The
Snow White Grow report
In this video you will see Snow White feminised growing in a Scrog. This strain is a

Perlite

Spliffseeds