Includes Rio 1400 PumpWe recommend using a Surface Pre-filter Box for Remoras with the Rio 1400 pump with this Remora skimmer. The Pre-Filter box will greatly improve the efficiency of the protein skimmer.For tanks over 75 gallonsDimensions:-Skimmer Height: 21.5"-Minimum Tank Height: 12.75"-Minimum Overhead Clearance for Proper Function: 6.75"-Depth: 3.25"-Width: 7.5" For hang-on use onlyAlong with the pump, standard equipment includes an adjustable collection cup, and a special baffle system which prevents any bubbles from entering the aquarium.