• all interior filters now have two filter chambers<BR> • one filter sponge can always remain in the filter chamber when cleaning – minimising the loss of useful bacteria<BR> • the main body of the filter remains in the aquarium while filter sponges and the impeller are removed for cleaning<BR> • flow adjuster allows regulation of flow rate<BR> • outlet nozzle can be rotated 180°<BR> • controllable Venturi system provides additional oxygen supply by blowing air bubbles into the tank<BR> • simple to fix in place with adhesive suckers<BR> • TÜV/GS tested, CE certified – safety and reliability assured<BR> • 2-year guarantee<BR> • biological filter sponge and active charcoal filter available as spare parts