This is a group buy for the Life Reef HVS3-24 skimmer (without pump). It will come with 6" collection cup, all the necessary fittings, valves, hoses etc...and upgraded with Mazzei venturi for better performance. You can read on my short review here. The Lifereef skimmers have NONE of the problems many other skimmers have. 1) NO STINK, NO ODOR, NO SMELL! Since the air is recirulated within the skimmer none of the stinky odors will foul your home. 2) NO SUCKING or WHISTLING NOISES