Abstract: A sand filter for use with swimming pools includes a tank that has a hollow interior space and a top diffuser for allowing spent pool water to enter the tank and for distributing the pool water inside the tank. The sand filter also includes filter media formed as a bed of material on a bottom of the tank and also includes laterals that are located under the filter media and allow filtered pool water to exit the tank and flow back to the pool. The filter media includes a bed of sand that is disposed on the bottom of the tank and a layer of perlite material that is disposed on a top surface of the bed of sand. The perlite material is a high flow rate, low density perlite material that only contains a trace amount of floaters.

Abstract: A sand filter for use with swimming pools includes a tank that has a hollow interior space and a top diffuser for allowing spent pool water to enter the tank and for distributing the pool water inside the tank. The sand filter also includes filter media formed as a bed of material on a bottom of the tank and also includes laterals that are located under the filter media and allow filtered pool water to exit the tank and flow back to the pool. The filter media includes a bed of sand that is disposed on the bottom of the tank and a layer of perlite material that is disposed on a top surface of the bed of sand. The perlite material is a high flow rate, low density perlite material that only contains a trace amount of floaters.

Abstract: A sand filter for use with swimming pools includes a tank that has a hollow interior space and a top diffuser for allowing spent pool water to enter the tank and for distributing the pool water inside the tank. The sand filter also includes filter media formed as a bed of material on a bottom of the tank and also includes laterals that are located under the filter media and allow filtered pool water to exit the tank and flow back to the pool. The filter media includes a bed of sand that is disposed on the bottom of the tank and a layer of perlite material that is disposed on a top surface of the bed of sand. The perlite material is a high flow rate, low density perlite material that only contains a trace amount of floaters.

Abstract: The Present invention is a portable apparatus for use in practice drills and educational settings which returns soccer balls to a kicker in a controlled manner. The invention utilizes an upwardly inclined net which directs a ball upwards into an energy absorbing pocket rather than immediately rebounding the ball back to the kicker. The pocket then absorbs the energy of the ball and then sends the ball back down to the kicker in a controlled manner. The goal of the invention is to increase the user's accuracy and to allow for increased amounts of kicks as the controlled return allows for less reset time between kicks.

Abstract: The Present invention is a portable apparatus for use in practice drills and educational settings which returns soccer balls to a kicker in a controlled manner. The invention utilizes an upwardly inclined net which directs a ball upwards into an energy absorbing pocket rather than immediately rebounding the ball back to the kicker. The pocket then absorbs the energy of the ball and then sends the ball back down to the kicker in a controlled manner. The goal of the invention is to increase the user's accuracy and to allow for increased amounts of kicks as the controlled return allows for less reset time between kicks.