The Aqua-DOC Magnetic Water Conditioner system is causing a revolution in the pool and spa industry by reducing pool/spa maintenance better than most products on the market. The Aqua-DOC uses lightweight, compact, ceramic "super" magnets to alter the nature of water. The result is the cleanest, clearest pool or spa with the least work. The Aqua-DOC dissolves body and tanning oils that usually collect on the side walls. It polarizes the small particles in the water , that usually recirculate right through the filter, into large enough clumps to be filtered out. The Aqua-DOC stabilizes pH, inhibits algae and mold and makes chlorine/bromine so efficient you can often use less. In addition, it keeps discoloring minerals from collecting on the side walls and removes scale from the side walls and inside of equipment. It also inhibits corrosion that can ruin pumps, filters and heaters. Since Aqua-DOC uses permanent super magnets, there are no parts to replace, requires no power to operate, no expensive installation, no maintenance and lasts virtually forever.