Pumice doesn’t Have got a precise definition, alternatively, it’s applied to rocks that have a similar qualities. Because of this, as well as variable composition of magma, it’s not easy to pin down it’s exact composition. It’s a totally pure, usually chemically-inert, and it has a neutral PH; it’s also https://pageoftoday.com/story4008898/the-best-side-of-reptile-substrate