Aqua-Rex is great for clearing the calcium scale from tiles and water features. It stops scaling in the salt water chlorine generator and makes the chemicals work more efficiently. It reduces phosphates thus making the pool clearer. It is fully waterproof and should be installed on the circulating line after the pump. Residential unit for homes with Electric. Aqua-Rex doesn’t use any salt or chemicals and it doesn’t produce any environmentally unfriendly discharges. It needs no maintenance or servicing and it costs hardly anything to run. There is no chance of additional corrosion to your system. Aqua-Rex reduces scaling and also gets rid of old scale in the home. It partially softens hard water so you use less soap and detergents and there is no slippery feel to the water. It can deliver the same benefits of a water softener, and there in no salt to haul.