CustomFlo Water System Starter Kit is a complete system that enables the creation of any desired flow patterns in any size aquarium tank and with any make or size filter. By assembling a variety of unique parts in multiple ways, the CUSTOMFLO is only limited by your imagination. It can be used on large or small aquariums or to upgrade any existing system. No holes are required since the over-the-wall assembly can be swiveled to allow close tank wall positioning. This new starter kit allows you to create basic systems, while the Complete CustomFlo Kit is only limited by your imagination. - No Holes to Drill. - Includes Control Valves, Spray Bars, Suction Cups, Adapters, Hydro Jet, Ball/Socket Assembly and all necessary Fittings.