Weipro Skimmer is an affordable and reliable venturi skimmer choice for aquariums up to 200 Litres, 500 Litres and 760 Litres tanks. It can be mounted external off the aquarium edge or in sump. Large collection cup. Comes with pre filter foam on return water to stop fine bubbles entering the aquarium. Easy adjustment tap on return water to keep skimmer performing at its best. Gives more contact time. Lowers pollutant concentrations. Hi-performance injector. Easy to adjust water level. Removes dissolved organic compound. Attatched air bubble elimination device to the outlet. Real venturi injector to make fine bubbles. 1. Special design hanging skimmer for saltwater tank. 2. Water pressure injection vortex separator design, highly divided the hamful materials from the water 3. Double isolation design, separation and filtration combo 4. Water level controlling adjustment 5. Suitable for all kinds 100-580 liters marine tanks 6. The best selling and chosen skimmer on recent China market Model Tank size Pump capacity Foot print SA-2011 280 Liters 900L/h 160cm 170X92X470mm SA-2012 380 Liters 1300L/h 180cm 170X92X520mm SA-2013 480 Liters 1800L/h 200cm 170X92X620mm SA-2014 580 Liters 2200L/h 210cm 170X92X670mm Many size for your choice