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 s...