An internal marine aquarium filter that provides within a single 
enclosure protein skimming, biological, mechanical and chemical 
filtration where the unit creates direct adjustable current for the aquarium independent of the activities of 
filtration and uses one interchangeable pump which can be of different size and manufacture. The unit is comprised of an outer casing with dedicated areas for biological, mechanical and chemical 
filtration, a removable 
protein skimmer with collection cup and lid, a removable plumbing 
assembly connected to a 
submersible pump, which performs filtration, 
protein skimming and creates a direct adjustable water current inside the aquarium independent of all other functions, and has 
sponge filters that provide a place for 
biological activity. The function and configuration of the unit perform vertically as to minimize its size, wherein the resulting benefits thereof are of compactness, efficiency, reliability, quietness, multifunctionality, ease of use, economics, aesthetics and overall performance.