Plantonix Perlite is a naturally occurring siliceous rock that when heated to 1600° F expands up to 20 times its original volume. 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 great for adding porosity to soil and soilless mixes. This perlite has numerous hydroponic applications as well. DIRECTIONS FOR USE: This will vary based on the growing medium from 15% - 50%. Be sure to follow the mix ratio, watering, and feeding recommendations for your specific plant and growing conditions. For Potting Media: You can mix Perlite up to 50% with Coco Bliss, compost, or peat moss. We recommend 60% Coco Bliss and 40% Perlite Bliss. For medium to heavy clay loam soils, mix 25-40% Perlite. Step 1: Mix perlite with Coco Bliss, compost, or bark to make a clean, soilless growing medium. Step 2: Spread an even layer of Perlite over the surface into the top several inches to lighten the soil and add aeration or improve drainage. Hydroponics: Perlite can be used as the sole medium or some combination of Coco Bliss and Perlite. Perlite is not a plant food replacement. STORAGE: Store in a clean, dry location. Reseal the package after use to guard against outside contamination or intrusion from pests.