The Urchin Pro is a small sump skimmer that requires no plumbing, fiddling with, or constant maintenance. Includes:Mag 3 pumpCleaning brush10" of 1/2" flexible hose and plastic clamps Features:For in sump use onlyFor tanks over 75 gallonsFootprint, 6" x 4.75"Height, 18" (Minimum height needed for collection cup removal is 24 inches)Mag 3 pump dimensions: 5" X 3.8" X 4.2". 1/2" MPT outlet.The Urchin is the newest addition to AquaC`s line of protein skimmers that utilize spray induction technology. Based on the popular Remora, the Urchin is a sump model that is suitable for small tanks that don`t require the waste-removing power of the AquaC EV Series. No plumbing required. Simply connect the pump, drop in the sump and plug in the pump. Unlike most sump skimmers, the Urchin does not need to be raised or tinkered with to maintain the proper water level. For those with larger reef tanks, try the AquaC EV Protein Skimmer.