The volcanic rock for aquariums derives from quality rock that goes through a careful manufacturing process where artists create pieces that are both functional and attractive. To begin with our manufacturing process, the rock is expertly hand collected and sorted through multiple times to remove any impurities, and then carefully processed to the right size and shape for filtering. Each unit is then quality controlled a final time to ensure that the rock is empty from any excess materials and meets the filtration standard. Finally, the rock is porous to allow for proper filtration and aeration to create a functional piece in the aquarium. All of the volcanic rock used in our aquariums is sustainably sourced to have a low net effect on the environment while creating a balanced habitat for fish. By using our volcanic rock, aquarium lovers are privy to extensive ecosystems which artificial filtering units are unable to create.