My pool has a strong odour and swimmers complain of red eyes. What is causing this?
Cause: Insufficient chlorine. Surprisingly the cause is not “too much chlorine” as many people think rather a lack of free available chlorine. This is what happens, As the available chorine in the pool water does its sanitising job it mixes with other chemicals (ammonia type). The chlorine combines with these chemicals to form compounds called chloramines. Most chloramines are formed by chlorine reacting with ammonia, urine and perspiration. It is these chloramines and not “too much chlorine”, that may cause the symptoms mentioned. Remedy: Shock treat with chlorine.