Brilliance for Spas Filter Cleaner - 1 pt Brilliance for Spas Filter Cleaner (16oz) Improves filtration and assures clean, clear spa water quality by removing body oils, scale and metal deposits from spa filters Use every 4-6 weeks, or as needed depending on the spa or hot tub A clean filter will improve your spa or hot tubs circulation Powerful citrus cleaning action and a pleasant lemon scent