With many convenient features to offer, Marina Easy Clean Gravel Cleaner is a practical tool for cleaning and maintaining your aquarium. Its quick-start feature provides a hassle-free startup. An exclusive gravel guard keeps the gravel in the tank, not in the bucket. An oval-shaped cleaning tube allows easy access to corners. Plus, it has a comfortable grip and non-kink hosing. The gravel cleaner works well in planted and decorated aquariums. Medium. Cleaning tube size: 6.4 cm (2.5 in) dia. x 37.5 cm (15 in) L with 1.83 m (6 ft) hosing.