Completely submersible motor with extremely quiet operation With suction cups to fit any aquariums and has a long lasting wearproof ceramic shaft Provides powerful water circulation for strong and consistent flow Energy saving and environmentally friendly Suitable for both marine and fresh water The Sobo WP-3300 has a water output of 600 liters per hour Does not overheat and operates quietly Ideal for aquariums with coral decorations and also great for waterfalls, fountains, skimmer and multi-tank aquariums