For aquariums from 125 to 250 gallonsFor in sump use21" tallA pump for mixing air and water and either a feed pump or feed hook up is required (and are not included). The Aqua Medic Oceanrunner 2700 pump is recommended for mixing air and water. You can either use an approx. 250 gph pump as the feed pump or hook up the Turboflotor directly to the overflow box.User Manual (pdf file in new window)The Turboflotor 1000 is a powerful skimmer with a unique plumbing scheme. Taking advantage of the fact that the surface of your aquarium is where proteins collect naturally, the Turboflotor 1000 is designed to intake the water exiting the overflow of your tank. By delivering the surface skimmed water directly into the reaction chamber of the Turboflotor 1000, efficiency is maximized. If splicing into the drain-line plumbing is not an option in your system, the Turboflotor 1000 can be run from a tee off of your main system pump or fed by a secondary pump. The Turboflotor 1000 requires a pump to vigorously re-circulate the volume of the reaction chamber, mixing it with finely chopped air bubbles. Also included is a filter box with bio balls, which installs on the exit pipes, to shed micro-bubbles and increase your biological capacity. The skimmer itself is entirely Ozone ready; simply replace the vinyl airline with silicone tubing to connect the ozone generator to the venturi.