Sintered glass cylinder media with an excellent porosity for mechanical and biological filtering of fresh and saltwater aquariums. CRYSTALCIL has a dual function: mechanical filtering as it traps coarse impurities carried by the water (leaves, excess food, excrement), biological filtering thanks to its porous characteristic which offers a large surface area to help and promote bacteria development which then break down the organic substances.
500 gr - Item code CRY500
Place CRYSTALCIL in the external filter or in the biological filter under the water recycle pump so that the water passes through it completely. Our 500 gr packet is sufficient for 200-250 litre aquariums. Although this product remains effective for a long period of time, it is however recommended to replace approximately every six months.