High-quality, biologically neutral rocks designed for easy coral fragmentation. Made from natural materials with the highest porosity, they allow for the rapid establishment of beneficial bacteria and other microorganisms. The addition of dolomite helps stabilize key marine aquarium parameters such as pH and KH. The use of natural materials ensures ideal conditions for the development of new life, namely coral fragments. These can be easily cut and combined, and placed anywhere on the rock or sand.

The porous structure ensures an increased filtration surface area and maximum resemblance to natural rock. A special tooth allows for the use of minimal amounts of glue and easy placement of the graft in the desired location; the flat base guarantees stable placement on the rock or grid.