Flying saucer flexible plastic water diverter assembly holds MetalFoam disc in spa skimmer. Copper/Silver purifying disc kills 99.9% of bacteria as it passes through reducing chlorine/bromine use up to 90%. Only light oxidation with household bleach is needed after every usage.
Metal Foam is a porous disc produced by proprietary sintering manufacturing process. Powdered copper and silver (Cu/Ag) are melted into a sacrificing porous base with the metal taking the foam's shape. The new tremendously porous metal foam has now increased it's surface area by over 5000% compared with flat metal of the same weight.
Once a month simply remove the Metal Foam and backwash with a hose and reinsert. The Metal Foam unit should be replaced about every 4 to 6 months depending upon usage.
Metal Foam will reduce chlorine/bromine usage up to 90%, however a low oxidizer is primarily required to "clear" the water. Metal Foam will eliminate algae, bacteria and viral bodies but will not "burn up" sweat, hair oil and other contaminates. You should lightly oxidize your spa after every usage with non chlorine shock, following manufacturer's recommendations. This will clean the water of by-products and dissipate quickly, leaving the spa virtually chemical free by its next usage.