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You are purchasing a pack of 10 high quality Compatible Air Stones suitable for use with all biorb and biube aquariums. PLEASE NOTE: These are not original brand air stones. They are a Finest-Filters compatible product intended to do the same purpose. Regular replacement of the air stone in your biorb aquarium is recommended, so that the air flow powering the filter is not reduced.

Designed for submersible use only with adjustable spray bar to increase oxygen levels Venturi aeration nozzle supplied to create bubbles, increase oxygen level of returning water with no air pump needed in principle Three replaceable filter sponge included inside the unit and also complete with suctions caps for attaching to the side of your tank

This is for a pack of 1 replacement cartridges for the Aqua Flow 200 internal Aquarium filter. It includes a complete unit with activated carbon within the sponge and it uses the 'easy click' method of quick replacement. Replacement filter cartridge