KaceyJ here is some information on the skimmer. You can find it on many of the on line stores such as MD. Let me know if you're interested.
Description
Collection Cup with built in foam-view window
Patented window built into the side of the skimmer neck allows for accurate real time evaluation of foam production.
The Triple-Pass Principle
Red Sea’s patented Triple-Pass maximizes the water air contact time inside the skimmer reaction chamber stripping the aquarium water for even the smallest traces of organic pollutants, while minimizing the external dimensions and footprint of the product. By forcing the water-air mixture along a circuitous route, the Berlin X2 achieves a total surface area equal to that of much larger conventional skimmers.
Benefits
Highly efficient skimming action
Removes even the smallest traces of organic pollutants from aquarium water
Super compact design
Minimal loss of seawater
Venturi injector
NEW high air-flow injector design
Completely removable for easy maintenance
Max. water throughtput: 600 lph / 160 gph
Max. air throughtput: 200 lph / 50 gph
Hang-on-tank kit
Enables the Berlin X2 to be quickly and easily converted from in-sump to hang-on configuration, offering the user greater flexibility and customization possibilities. The hang-on-tank kits is comprised of quick-fit parts for user-friendly installation and maintenance.
Long term pollutant reduction
Tests have shown that over time the Berlin X2 is extremely effective in lowering the level of oxygen-consuming pollutants (COD/BOD) in the aquarium water.
How do we rate our skimmers?
The recommended aquarium volume ratings for the Berlin X2 have been calculated according the optimum turnover rate per aquarium type, as determined by laboratory test conducted at Red Sea. They are as follows:
Fish tank: 1 turnover/h
Soft Corals (LPS): 1.5-2 turnover/h
Hard Corals (SPS): 3-4 turnover/h