A multifunctional filtering device for an aquarium mainly disposed at the aquarium for filtering breeding water in the aquarium, the multifunctional filtering device for an aquarium comprising:
- a filter box comprising a rectangular casing with an opened top portion, the rectangular casing comprising a cylindric positioning seat at the center of the inner side of the bottom thereof, a water transportation pipe at a bottom portion of a first lateral sidewall and in communication with the sidewall and the positioning seat, a water output pipe fixing seat at the outer side of a bottom portion of a second lateral sidewall and in communication with the rectangular casing, and horizontal locking grooves respectively defined in outer sides of two longitudinal sidewalls of the rectangular casing;
- a suspension device comprising a latching member at one end thereof for engaging with the locking groove and a fixing member at the other end thereof fixed at the top of one of the sidewalls of the aquarium;
- a vortex flow generator comprising a disk fixed inside the positioning seat and a lateral symmetrical sprayer disposed at the top of the disk and communication with the bottom of the disk;
- a bubble collector comprising a box fixed at the top of the rectangular casing, the box comprising an opening at the top thereof for covering with a cover plate, and a constriction pipe at the center of the bottom thereof, in communication with the bottom thereof and upwardly extending to near the cover plate, a fixing end being disposed at the lower end of the constriction pipe and outside the bottom of the box for connecting with a hollow guiding pipe with a diameter being slightly larger than that of the positioning seat, the lower edge of the hollow guiding pipe extending to the outer side of the top of the positioning seat;
- a pump motor comprising a water outlet connecting with the outer end of the water transportation pipe and a water inlet, the pump motor being further defined with an air intake at the side of the water inlet for connecting with an air input pipe;
- a water input pipe unit comprising a water pipe head fixed at the water inlet of the pump motor for blocking large feculences from entering therein;
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- a water output pipe unit comprising a water output pipe upwardly extending from the water output pipe fixing seat and a horizontal flow guiding pipe near the top of the water output pipe and in communication with the water output pipe, a rotatable ring being disposed at the top of the water output pipe for adjusting flowrate of output water, a hollow pipe intergrally extending from the top of the rotatable ring with a proper length and in communication with the water output pipe, a sealing cover being threadedly disposed at the top of the hollow pipe.