The Seapora 1000 Overflow Prefilter is a low profile acrylic overflow box that hangs on your tank and easily converts a standard aquarium into one that is reef-ready. It comes with dual foam cylinders, a nylon utube and a 1 inch bulkhead. The Seapora Nano Overflow Prefilter supports flow rates of up to 1000 GPH and is ideal for tanks up to 150 gallons.The item "RA Overflow Prefilter 1000" is in sale since Tuesday, August 18, 2020. This item is in the category "Pet Supplies\Fish & Aquariums\Filters". The seller is "bluemedical" and is located in Sterling Heights, Michigan. This item can be shipped worldwide.