Fauna Marin Reef FixREEF FIX CORAL AND AQUARIUM CEMENT REEF FIX makes it possible to aquascape your aquarium like never before! With REEF FIX you can create complete aquarium decorations in combination with living stones or dead reef rocks, Fragrocks can be quickly and safely combined with the reef construction and attach corals to the stones. You can even make your own fragrocks with Fauna Marin Reef Fix and some coral sand. REEF FIX can be used inside the aquarium,