Through simple functionality, beginners or experienced hobbyists can easily appreciate the beauty of the QuietFlow E Internal Power Filters by Aqueon. They provide excellent economical filtration for a clean and clear aquatic environment, and are compatible with any rimmed or rimless aquarium. Attach it against the aquarium using suction cups, and/or you can utilize the hang-on feature by securing it with hang-on clips. The auto-start pump does not require priming, and it will automatically restart and restore in the event of a power failure, or interruption.