Method for filtering water in an aquarium, a water cultivation tank and similar water bonds, and corresponding filtering system

1. A method for filtering the water of an aquarium, a water cultivation tank or similar water ponds, by means of a filtering system comprising a closed vessel and defining a chamber, a filtering body housed in the chamber, a circulation pump having a suction duct, an outlet of the suction duct being placed in a bottom area of the vessel, and the circulation pump communicating with the aquarium by interposition of a siphon and a delivery duct communicating with the aquarium, and vent means for ejecting air from the chamber, the method comprising the steps of:

partially filling the filtering body with a predetermined amount of water;

starting the pump;

short-circuiting the pump by a fluid passage by putting the delivery duct in communication with the closed vessel;

keeping the pump short-circuited at least until the siphon is triggered or activated, to allow water to be transferred from the aquarium to the vessel;

subsequently stopping the pump;

keeping the pump stopped to allow the air to escape from the chamber and the filtering body to be filled with water; and

re-starting the pump once the filtering body is filled with water and the air has completely escaped.

wherein a time and a mode of operation of the pump is controlled using a programmable electronic control board.

2. A method according to claim 1 , wherein the escape is performed through the passage, ejecting the air in the delivery duct.

3. A method according to claim 1 , wherein said steps are performed cyclically according to a program of said electronic control board.

4. A filtering system suitable for being associated to an aquarium, a water cultivation tank or similar water ponds, comprising a closed vessel and defining a chamber, the filtering system comprising:

a filtering body housed in the chamber;

a fluid circulation pump having a suction duct;

said circulation pump communicating with the aquarium by interposition of a siphon and a delivery duct communicating with the aquarium;

a programmable electronic control board for controlling a time and a mode of operation of said circulation pump;

vent means communicating with the chamber, said filtering body being interposed between the suction duct and the circulation pump; and

a fluid passage which puts the delivery duct in communication with the vessel,

wherein said circulation pump is located in correspondence with a bottom area of the vessel.

5. A filtering system according to claim 4 , wherein said passage is located near a top area of the vessel.

6. A filtering system according to claim 5 , wherein said passage serves as an airvent and/or a water recycle of said chamber.

7. A filtering system according to claim 4 , wherein said passage comprises a duct.

8. A filtering system according to claim 7 , wherein the fluid passage duct for water recycle and the air vent passage comprise two different duct sections.

9. A filtering system according to claim 4 , wherein said vessel comprises a central area wherein said filtering body is located, and communicating with said pump and a peripheral area communicating with said suction duct.

10. A filtering system according to claim 9 , wherein said suction duct is inserted in said peripheral area of the vessel near the bottom thereof.

11. A filtering system according to claim 9 , further comprising an offlake opening suitable for puffing said peripheral area, wherein said suction duct is located, in direct communication with said central area of said vessel.

12. A filtering system according to claim 4 , wherein said filtering body comprises a central space for housing a biological filter and at least a peripheral housing, suitable for housing a mechanical filter.

13. A filtering system according to claim 4 , wherein said electronic control board is programmed to operate said circulation pump cyclically.