Aqua One NanoFlow 220 Internal Filter (11340) The Aqua One NanoFlow low flow internal filter offers effective biological, chemical and mechanical filtration specially designed for planted aquariums as the reduced surface agitation helps maintain higher CO2 levels which improve plant health. With different outlet options including Spray Bar and Venturi, the filter can be customised to suit the needs of each individual aquarium. The filter can be used in a shallow aquarium simply by turning the filter on the side and using the elbow to direct the flow as required. This does not include food, live plants or any other perishable items. You need to include the Return & Exchange Form along with the item(s) you are returning in their original condition and any packaging that came with it.