50 l Clay Grow Rocks (5-Pack of 10 l)

Viastone, an incredibly useful growing medium derived from clay. Clay itself is renewable and plentiful, making Viastone a premium growing medium due to its ecologically sustainable quality. Use Viastone virtually anywhere: the greenhouse, propagation systems, outdoor gardening, around shrubs and trees, compost aeration, rooftop gardening, house plants, hydroponic growing, etc. When estimating necessary amount of Viastone for your application understand that the 50 l and 10 l quantity is based on the standard Horticultural trade Gal. is equal to 0.71 U.S. liquid gallon. PH neutral/lightweight/reusable. Please rinse packaged rocks before use due to dust or particles from shipping. Viagrow offers two types of clay grow rocks; round with smooth outer surface VS10, VS10-2, VS10-3, VS10-5 and irregular shape grow rocks VS50 which offer more surface area for an increase in health microbiology.