The Ciano CF40 is a compact but very effective internal filter suitable for tanks 20-40 litres.  The outlet is  a spray bar (like a showerhead) and you can adjust the angle to alter the direction of flow and vary how much oxygen is drawn in.  The filter compartment comes complete with a CLEAR & PROTECT cartridge and a foam filter.  There are extra cartridge options of BIO-BACT to boost filter bacteria and WATER ALGAE to reduce phosphate if needed.  If you download the My Ciano app you can program handy reminders for when to change your filter sponges!  It is very quiet and easy to maintain - a brilliant filter for any nano or starter tank.

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