Biologically neutral high quality rocks created for the easy fragmentation of corals. Made from natural materials and quality of the greatest porosity, they allow a quick installation of beneficial bacteria and other microorganisms. The addition of dolomite helps stabilize the key parameters of the marine aquarium such as PH and KH. The use of natural materials guarantees ideal conditions for the development of a new life, which are frags of coral. These can be easily cut and combined, and placed anywhere on rock or sand.

The porous structure guarantees an increase in the filtration surface and a maximum resemblance to natural rock. A special tooth allows the use of minimum quantities of glue and the easy placement of the graft at the desired location, the flat base guarantees a stable placement on the rock or the grid.