An aquarium filter to increase dissolved oxygen and improve water quality comprised of a box containing a segregated water inlet tank, a water collection tank, and multiple filtration tanks; water introduced into the water inlet tank being pumped by a submerged motor and mixed with air introduced from the ambient to be flushed to the water collection tank; the water being bumped against bio-filtration balls in filtration tank for the beneficial microbes to get attached to the filtration balls to consume hazardous microbes.