Aquarium System

An aquarium system comprising a display tank and a filter tank, the display tank elevated above the filter tank, a filter tube having an inlet end open to the display tank and an outlet end open into the filter tank, the outlet end delivering water from the display tank into a first compartment of the filter tank;

• the first compartments is defined by a first baffle which allows water from the first compartment to spill over the first baffle into a second compartment;
• a filter sock held within the first compartment and having an open end elevated above a top elevation of the first baffle, the outlet end of the filter tube located within the filter sock below the top elevation of the first baffle;
• a source of pressurized air communicating through an air tube wherein the air tube has an outlet end submerged within the first compartment within the filter sock, wherein air bubbles are provided into the first compartment inside the filter sock;
• the second compartment defined by the first baffle and a second baffle, wherein the second baffle has a top elevation equal to or below a top elevation of the first baffle, wherein water is delivered from the second compartment to a third compartment spill over the second battle;
• wherein water moves sequentially from the first compartment to the second compartment to the third compartment;
• a water pump submerged in the third compartment, and a recirculation tube connected to an outlet of the water pump at one end and having an opposite end open into the display tank, the water pump and the recirculation tube delivering filtered water from the filter tank back to the display tank.

A method of filtering a display tank for fish comprising the steps of:

• providing a display tank;
• providing a filter tank arranged to receive water from the display tank;
• arranging that the water from the display tank is received into a first compartment of the filter tank;
• arranging a pressurized air supply to deliver air bubbles into the first compartment;
• arranging for the water delivered into the first compartment flows over a first baffle into a second compartment;
• arranging rocks and/or sand and algae and/or a clean-up crew is arranged in the second compartment;
• arranging for the water in the second compartment spills over a second baffle into a third compartment;
• arranging a recirculation pump in the third compartment to deliver water from the filter tank to the display tank.