check this out....kinda small in height..
DOC Skimmer 9020
(9020.000)
Recommended for aquariums up to 2,000 litres (528 US gal.) of salt water.
Dimensions: L125 x W113 x H460 mm (L4.9 x W4.4 x H18.1 in.)
230V/50Hz (115V/60Hz) 42 W; water throughput: 2,400 l/h (634 US gal./h); air capacity: 1,300 l/h (343 US gal./h). Comprises two reactors for removal of foaming water. Delivery in storage container 5002.25 (can be used as skimmate collector), with 2 x 40 cm (2 x 15.7 in.) drain hose and accessories for the operation in aquarium cabinets. If the collector is far below the skimmer, we recommend 2 x 1075.2 accessories.
9020.000 618