These organisms are continually introduced into the pool by winds, dust storms, rain showers, and the like. Bacteria are controlled by the use of disinfectants such as chlorine or bromine . The required amount of soda ash to increase the pH level of pool water to the ideal range of 7.2-7.6. It usually exists due to improper pH balance. The chlorine in the water that has been weakened by the presence of contaminants such as urine, perspiration, etc.
Eye irritation occurs when chloramines build up.
May be obtained in granular or liquid form. The ability of maintaining original surface characteristics under prolonged use. Each skeleton is an extremely porous framework of almost all silica. DRY ACID - A granular material used to lower the total alkalinity and pH. Technical name Sodium Bisulfate. The total surface area through which the design flow rate will be maintained during filtration.