Patent ID: 8876087

Claim:
A water tank system ( 100 ) comprising: (a) a tank ( 110 ) having an inner cavity ( 117 ) adapted to hold water ( 101 ), wherein a filling aperture ( 118 ) is disposed in a top surface ( 115 ) of the tank ( 110 ) and a spout ( 130 ) is disposed in a first side ( 111 ) of the tank ( 110 ) near a bottom surface ( 116 ); (b) an air pump ( 150 ) external to the tank ( 110 ); (c) an air stone ( 140 ) disposed in the inner cavity ( 117 ) of the tank ( 110 ), the air stone ( 140 ) is connected to the air pump ( 150 ) via a tube ( 160 ) that penetrates the top surface ( 115 ) near the filling aperture ( 118 ), the air stone ( 140 ) is adapted to gradually diffuse oxygen into the water ( 101 ) in the tank ( 110 ); and (d) an air water trap ( 180 ) the air water trap ( 180 ) S-shaped and generally hollow and has an open first end ( 181 ) and an open second end ( 182 ), the first end ( 181 ) penetrates the top surface ( 115 ) of the tank ( 110 ), the air water trap ( 180 ) allows condensation to collect and air to be exhausted from the tank ( 110 ).