Pool equipment for a swimming pool or spa may include a sealable cavity, and the sealable cavity may allow a flow of water through the cavity and maintain the cavity with water when the flow of water is disrupted or halted. Optionally, a probe and/or a water treatment feature may be within the cavity. The cavity may be within a body cavity defined by a body of the pool equipment or outside of the body cavity.

A water treatment insert for a pool skimmer system includes a chemical treatment portion separated from a mechanical filtration portion. The treatment device includes an upper portion and a lower portion. The upper section can include a vertical wall or walls, which should be substantially watertight so that substantially all the water entering the pool skimmer flows through the upper portion, and then into the lower section. The entire device is preferably received in the filter basket receiving section of a conventional pool skimmer, in place of the conventional filter basket. One of the upper and lower sections provides mechanical filtration and the other chemical treatment, to enhance the water treatment function of the skimmer.

A pumping system for an aquatic application includes a motor to be coupled to a pump and a controller in communication with the motor. The controller is configured to determine a speed of the motor, determine a current performance value of the pumping system, compare the current performance value to a referenced performance value, determine an adjustment value based upon the comparison of the reference and current performance values, and adjust a speed of the motor based on the adjustment value.

A pool cleaner includes a liquid inlet and a liquid outlet, a propulsion system, and a suction system including a motorized pump for drawing liquid through the inlet and expelling it through the outlet. A filter located between the inlet and the pump is configured to trap debris. A sanitization chamber that includes a chamber inlet and a chamber outlet is integrated into the housing such that the chamber inlet is located downstream of the pump and is configured to divert a fraction of the liquid that is outflowing from the pump into the chamber inlet, the remaining outflowing liquid flowing out through the liquid outlet. The sanitization chamber is configured to sanitize the liquid that is flowing through the sanitization chamber and to retard a flow rate of the liquid that is flowing through the sanitization chamber relative to a flow rate of the remaining outflow liquid.

A publicly accessible urban beach entertainment complex is disclosed, with a man-made tropical, pristine-clear lagoon as the centerpiece of the complex. The lagoon includes a surf feature and surrounding the lagoon are entertainment, educational, sports, and commercial facilities. The complex has a controlled public access and provides the look and feel of a tropical beach with clear waters and sandy beaches. In addition a method for efficiently utilizing facilities and land that are vacant, underutilized, have limited uses, or that are contiguous to or nearby recreational, educational, sports, or commercial venues is disclosed. The method providing a publicly accessible urban beach entertainment complex with a centerpiece man-made tropical-style pristine-clear lagoon having a surf feature. The method allows for generating revenue and increasing efficiency by pairing vacant sites, underutilized sites, limited use land, or sites that are contiguous to entertainment, educational, sports, and/or commercial venues with urban beach entertainment complexes. The complex preferably has a controlled public access, thereby allowing entrance upon payment of a fee.

A publicly accessible urban beach entertainment complex is disclosed, with a man-made tropical, pristine-clear lagoon as the centerpiece of the complex, with surrounding entertainment, educational, sports, and commercial facilities, the complex having controlled public access and providing the look and feel of a tropical beach with clear waters and sandy beaches. In addition a method for efficiently utilizing facilities and land that are vacant, underutilized, have limited uses, or that are contiguous to or nearby recreational, educational, sports, or commercial venues is disclosed. The method providing a publicly accessible urban beach entertainment complex with a centerpiece man-made tropical-style pristine-clear lagoon. The method allows for generating revenue and increasing efficiency by pairing vacant sites, underutilized sites, limited use land, or sites that are contiguous to entertainment, educational, sports, and/or commercial venues with urban beach entertainment complexes. The complex preferably has a controlled public access, thereby allowing entrance upon payment of a fee.

A chemical injector for use with a pool system can include an assembly having a disposable chemical container (214) and a pump (106,216). The disposable chemical container can fluidly seal a chemical in an inner volume of the disposable chemical container. The pump can be coupled to the disposable chemical container for injecting the chemical into the fluid flow of the pool system.

A system for the maintenance and cleaning of swimming pool water suitable for use in swimming pool machine rooms. The system comprises a rectangular body formed by an L-shaped region and a smaller rectangular region, wherein the L-region houses the heating motor and the filter motor at its rear, and having between them, located beneath a cover, a flood controller sensor. On the shorter side of the L-region is the chlorinator, which is connected at an end to a flow controller sensor. The smaller rectangular region, in turn, is split into a dry housing and a wet housing, the dry housing being where the swimming pool accessories activating valves are located, and the wet housing providing a location for a swimming pool water inlet opening, a first tubular recess for a water inlet control float and a second tubular recess for accommodating a cartridge filter.

A floating chemical dispenser is disclosed that is configured to dispense a chemical into a body of water, such as pool water. The chemical dispenser includes a float attached to a container. The container contains a chemical composition, such as a chlorine source. The container also defines an aperture that allows water to enter the container at a controlled rate. When the dispenser is placed in a body of water, water enters the container and gradually dissolves and releases the chemical. An end cap is position on the container and rotates between a closed position and at least one chemical dispensing position. The end cap further includes a locking device that locks the end cap into a closed position to prevent inadvertent release of the chemical.

Systems, units and methods for monitoring water of at least one swimming pool (SP) by: obtaining non-manipulation data of the SP water or one or more samples thereof before/without applying any manipulation to water of the SP sample(s) thereof; applying at least one manipulation over the SP water or one or more samples thereof; obtaining manipulation data of the SP water indicative of responsivity of the SP water or one or more samples thereof to each manipulation applied thereto, using one or more sensors; and analyzing the non-manipulation and manipulation data to determine one or more characteristics of the SP water including for example concentration of one or more substances in the SP water. In some embodiments, at least one manipulation may include dechlorination of the SP water.