Pumice is a very porous and has a kind of abrasive surface texture. It is produced as a product of volcanic reactions. Pumice Rock differs in the fact that it is extremely light in weight as well as color. It is also the most vesicular in comparison to other types of Lava Rocks. Pumice is often referred to as the Floating Stone because of its extremely light density and causing it to float on water.
Pumice is an inert rock that doesn’t have an impact on water parameters. This makes it a good choice for all types of aquariums because it will not cause the PH to go up or down. Furthermore, it won’t have an influence on the water hardness either.
We recommend using this rock in terrariums and paludariums as a form of the substrate and/or soil additive. Pumice gravel can also be used as filter media due to its high surface space for bacteria to settle. Make sure to clean the rock to assure no unwanted dust leeches into the enclosure.
Pumice has the most amount vesicularity, making it able to stock more bacteria than another Lava Rock.