Aqueon Submersible Internal Aquarium Filter, AT40 Gallons

Aqueon Submersible Internal Power Filters offer unique versatility, they are fully submersible and for use in both aquariums and aquatic terrariums. These filters effectively clean water using a three-stage internal filtration process: Stage 1 uses a dense foam to remove particles and debris; Stage 2 utilizes activated carbon removing toxins, odors and discoloration from water; Stage 3 uses a patented Biogrid to remove ammonia and nitrites from water. These filters have a unique design feature - directional positioning return pipe with flow control. It allows for easy vertical or horizontal positioning within the aquarium or terrarium. They are self-priming; simply position in your aquarium or terrarium and plug in. Aqueon Submersible Internal Power Filter are preloaded with an Aqueon replaceable cartridge(s). Available in 2 sizes, AT10 and AT40.