Bathtubs; Apparatus for disinfecting water; Filters made of fiber for water filtration; Filters, heaters and pumps sold in combination for use in hot tubs; Hot tubs; Pool skimmer diverter; Swimming pool water cleaning and filtering units; Water filtering apparatus; Water filters; Water filtration and purification units and replacement cartridges and filters therefor; Water purification units; Water purifying apparatus; Water sterilizers; Water treatment equipment, namely, water filtration uni...