Superfish Aquaflow Xl Bio Filter 500 L/H

Large internal filters with Triple-Action filter cartridges. The first cartridge is filled with Filter foam and Activated Carbon. This cartridge has to be replaced every month. The second cartridge is filled with CrystalMax, a very porous biological filter medium made from sintered glass. It acts as a sponge for micro-organisms, decomposes waste products and harmful substances very fast and effectively. Perfect filtration for tropical and coldwater aquariums.