Ponics Stone™ Granular (Soilless Grow Media) Ponics Stone Granular:35 lbs. (full-sized production bag) Stone Size: range of 3/8

Stone Size: range of 3/8 to 1/8-inch pumice stones

SoilRox does not tend to work its way to the surface over time like lighter amendments

Naturally pure pumice stone

The natural micro structure of a pumice stone—a foamed-stone web of air-filled vesicles—classifies it as a cellular solid

granular nature of pumice makes it ideal for use in flexible-sheet blast mitigating assemblies

Ponics Stone™ Granular (Soilless Grow Media) Ponics Stone Granular:35 lbs. (full-sized production bag) Stone Size: range of 3/8Ultra efficiency soilless grow systems demand high performance grow media. Ponics Stone delivers in the key areas of stability, nutrient holding capacity, gas exchange, drainage, weight, media particle size, crop balance and media life. Ponics Stone Granular is ideal for root cuttings and other propagation uses. Also for geophytes, succulents, cacti. Stable and grippy, but will not over compact. Roughly the size equivalent to a medium grade