Black Lava is a stone very versatile by its poreause and light structure. Used as a decorative floor covering by its warm hues and its water retention capacity. It can also be used at the bottom of pots as a drainage layer. In a pool, an ecological pool, an aquarium or even treated wastewater, it filters water in a natural way with its neutral pH. In fine particle, it serves as a substrate for cactus or bonsai.