Water filtering apparatus; Water purifying apparatus and machines; Sprinkler heads; Underwater pool and spa lights and lighting fixtures; Filtration units comprised of a filter and module for use with swimming pools and spas; Valves for use with swimming pools, spas, hot tubs, ponds, and water parks; Automatic chlorine generators for swimming pools, spas and water parks; Apparatus and dripper irrigation system for water treatment which is comprised of filters, pumps, regulators, and heaters sold in combination for use on swimming pools, water parks, aquariums, zoos containing water areas and aquaculture; Drain rings, grates, and cup anchors for use with swimming pools and spas; Plumbing fittings, namely, post indicator valves to open or close a valve or to indicate the position of a valve