The Penn Plax Battery Powered Gravel Cleaner is a superb aquarium cleaner. This cleaner efficiently removes waste and dirt from gravel, and has a re-usable snap on filter bag allows for multiple uses. The cleaner also has an extendable tube for hard-to-reach spots. * Battery powered gravel cleaner to keep fish healthy * Efficiently removes waste and dirt * Re-usable snap on filter bag allows for multiple uses * Features an extendable tube for hard reaching areas * Fast, easy, reliable tool for cleaning aquarium gravel