This compact, yet powerful protein skimmer was specially designed to fit the 14 and 29 gallon Biocubes. It quietly and efficiently removes harmful organic waste products from saltwater environments. This system is simple to set-up and easy to clean and maintain. Kit includes a heavy-duty air pump, air flow valve, skimmer, tubing, airstone, collection cup, collection cup lid, suction cups and attachment clip. Use as directed.