Pack of two mixed replacement cartridges for the aquarium systems cobra internal filter ranger newaqua diamante plus is a mix of filtration elements especially designed to eliminate substances such as phosphates ammonium nitrates and copper as well as odours colouring agents chlorine and ozone r it leaves the water crystal clear when it is brownish phenol accumulation or cloudy excess particles in suspensionr newaqua diamante plus exerts an action preventive algae proliferation it i