A baffle tank is disclosed which is designed to filter a fluid along with a method of forming the baffle tank. The baffle tank has a bottom wall joined to at least one sidewall to form an enclosure having a first chamber in fluid communication with a second chamber. The first chamber has a top wall with an enlarged opening formed therein. The first chamber also has an inlet for receiving incoming fluid. The second chamber has a top wall with an enlarged opening formed therein. The second chamber also has an outlet through which fluid can be discharged. A first baffle is formed by at least a portion of the sidewall of the first chamber. The first baffle is joined to at least a portion of the sidewall of the second chamber. The first baffle extends downward from the top walls of the first and second chambers and has a lower end positioned above the bottom wall. A second baffle is formed in the second chamber and extends upward from the bottom wall and has an upper end positioned below the top wall of the second chamber. The lower end of the first baffle is located closer to the bottom wall than is the upper end of the second baffle.