Abstract: An advanced oxidation process system and associated method includes a device with a housing having a wall with a first side exposed to water of the swimming pool or spa and a second side opposite from the first side. The device additionally includes an ultraviolet lamp within the housing. In some embodiments, an electrical ballast for an ultraviolet generator may be attached to the second side of the wall and in thermal contact with the wall. In certain embodiments, an end cap may be attachable to and removable from the housing, and the ultraviolet lamp may be supported by the end cap and positionable within the water chamber.

Abstract: A low profile spa jet having a structure allowing for the use of a jet housing for both threaded/nut and grommet installation, wherein the jet protrudes into the spa tub less than 0.5?. The low profile spa jet also can have a jet face/flange that is interchangeable between threaded and grommet jet bodies without changing the relationship to the spa wall, wherein the jet protrudes the same amount in the installed state for both styles of jet body. The low profile spa jet also can have a jet face/flange that is removable and/or interchangeable before and after the jet body and jet internal are installed in the spa.

Abstract: A multi-weir door assembly is coupled to a skimmer body near a front entrance of the skimmer body such that a flow of water received in the front entrance is incident on a front side of the multi-weir door assembly. The multi-weir door assembly comprises multiple weir doors that are rotationally coupled to the skimmer body by at least a first hinge assembly. Each of the weir doors has a respective buoyancy, and at least first and second weir doors of the multiple weir doors have first and second buoyancies that are different from one another such that the flow of water incident on the multi-weir door assembly affects the first and second weir doors differently in terms of an angular degree to which the incident flow of water causes the first and second weir doors to rotate about first and second axes of rotation, respectively.

Abstract: A low profile spa jet having a structure allowing for the use of a jet housing for both threaded/nut and grommet installation, wherein the jet protrudes into the spa tub less than 0.5?. The low profile spa jet also can have a jet face/flange that is interchangeable between threaded and grommet jet bodies without changing the relationship to the spa wall, wherein the jet protrudes the same amount in the installed state for both styles of jet body. The low profile spa jet also can have a jet face/flange that is removable and/or interchangeable before and after the jet body and jet internal are installed in the spa.

Abstract: A light system having a hollow housing; a light source provided in the housing; means for mounting the housing to a pool wall or floor; and a lens provided at an open end of the housing, having at least a portion configured to modify at least a portion of the light to match, blend in with, or at least compliment the pool wall or floor; and a flange surrounding the periphery of the lens.

Abstract: A low profile spa jet having a structure allowing for the use of a jet housing for both threaded/nut and grommet installation, wherein the jet protrudes into the spa tub less than 0.5?. The low profile spa jet also can have a jet face/flange that is interchangeable between threaded and grommet jet bodies without changing the relationship to the spa wall, wherein the jet protrudes the same amount in the installed state for both styles of jet body. The low profile spa jet also can have a jet face/flange that is removable and/or interchangeable before and after the jet body and jet internal are installed in the spa.

Abstract: A multi-weir door assembly is coupled to a skimmer body near a front entrance of the skimmer body such that a flow of water received in the front entrance is incident on a front side of the multi-weir door assembly. The multi-weir door assembly comprises multiple weir doors that are rotationally coupled to the skimmer body by at least a first hinge assembly. Each of the weir doors has a respective buoyancy, and at least first and second weir doors of the multiple weir doors have first and second buoyancies that are different from one another such that the flow of water incident on the multi-weir door assembly affects the first and second weir doors differently in terms of an angular degree to which the incident flow of water causes the first and second weir doors to rotate about first and second axes of rotation, respectively.

Abstract: A light system having a lens component with at least a portion of the lens configured for receiving an aesthetic material allowing the light system to match, blend in with, or compliment a pool or spa wall or floor, while allowing at least a portion of the light to be emitted into the pool or spa interior, and a housing component for attaching to a pool or spa wall or niche or passage in a pool or spa wall.

Abstract: A pool drain or sump basin having elongated ring-shaped body, at least one and preferably a plurality of outlet ports about the ring-shaped body for allowing water to exit the drain, external peripheral flanges for mounting the drain, and an opening for allowing water to enter the drain, the ring-shaped body having an inner sidewall and outer sidewall, and open topside, and a closed bottom or floor closing off the bottom side of the body, bridging the gap between the inner sidewall and the outer sidewall, and creating a drainage channel. The body may have an optional cover configured as a removable or replacement cover with openings. The pool drain may have optional bridging elements and flow regulating elements for greater structural support and water flow regulation through the pool drain.

Abstract: A low profile spa jet having a structure allowing for the use of a jet housing for both threaded/nut and grommet installation, wherein the jet protrudes into the spa tub less than 0.5?. The low profile spa jet also can have a jet face/flange that is interchangeable between threaded and grommet jet bodies without changing the relationship to the spa wall, wherein the jet protrudes the same amount in the installed state for both styles of jet body. The low profile spa jet also can have a jet face/flange that is removable and/or interchangeable before and after the jet body and jet internal are installed in the spa.

Abstract: A light system having a hollow housing; a light source provided in the housing; means for mounting the housing to a pool wall or floor; and a lens provided at an open end of the housing, having at least a portion configured to modify at least a portion of the light to match, blend in with, or at least compliment the pool wall or floor; and a flange surrounding the periphery of the lens.

Abstract: A system for monitoring performance of a water sanitation device includes a housing having a water flow path, a power source, an ozone generating element configured to provide ozone to the water flow path, and an ultraviolet (UV) light generating element configured to expose the water in the flow path to UV light, a first monitoring circuit configured to monitor at least one operational aspect of the ultraviolet (UV) light generating element, a second monitoring circuit configured to monitor at least one operational aspect of the ozone generating element, a control circuit configured to receive an output of the first monitoring circuit and an output of the second monitoring circuit, and a display element configured to provide an indication of a status of at least one of the power source, the ultraviolet (UV) light generating element and the ozone generating element.

Abstract: A pool drain or sump basin having elongated ring-shaped body, at least one and preferably a plurality of outlet ports about the ring-shaped body for allowing water to exit the drain, external peripheral flanges for mounting the drain, and an opening for allowing water to enter the drain, the ring-shaped body having an inner sidewall and outer sidewall, and open topside, and a closed bottom or floor closing off the bottom side of the body, bridging the gap between the inner sidewall and the outer sidewall, and creating a drainage channel. The body may have an optional cover configured as a removable or replacement cover with openings. The pool drain may have optional bridging elements and flow regulating elements for greater structural support and water flow regulation through the pool drain.

Abstract: A light system having a lens component with at least a portion of the lens configured for receiving an aesthetic material allowing the light system to match, blend in with, or compliment a pool or spa wall or floor, while allowing at least a portion of the light to be emitted into the pool or spa interior, and a housing component for attaching to a pool or spa wall or niche or passage in a pool or spa wall.