Lava rock is very popular and versatile. Formed by the solidifying of molten rock, Lava rock comes in variable shapes, and has a rough textured surface, both of which provide lots of useful nooks and crannies for fish and shrimp to explore. It is now widely used by aquascapers as plants such as mosses can be easily attached, and with its variable colouration it looks stunning in Malawi cichlid aquariums. Much lighter in weight than most other rocks, it is very easy to use and place in the tank. Suitable for use in both freshwater aquariums and vivariums. Supplied in 20kg packs.