Macau Olympic Aquatic Centre instead of chlorine. Macau Olympic Aquatic Centre The Macau Olympic Aquatic Centre (; ) is an aquatic center in Taipa, Macau, China. Inaugurated on March 28, 2003, the aquatic center covers a total area of 3,220 m and has a seating capacity of 1,500. The Aquatic Centre includes a diving pool 25 meters by 25 meters (with an adjustable floor capable of reaching a maximum depth of 5 meters) and a 50m swimming pool with 10 lanes. Both facilities comply with the latest FINA standards and are eligible for holding international competitions. Water quality is maintained by a sophisticated sanitizing
Swimming pool lane lines and gutters, and the use of other innovative hydraulic, acoustic and illumination designs. In the last two decades, a new style of pool has gained popularity. These consist of a small vessel (usually about 2.5 × 5 m) in which the swimmer swims in place, either against the push of an artificially generated water current or against the pull of restraining devices. These pools have several names, such as "swim spas", "swimming machines", or "swim systems". They are all examples of different modes of resistance swimming. Hot tubs and spa pools are common heated pools used for relaxation