Swimming Pools and Spas -Why sanitizing alone is not enough?
When sanitizers are used to oxidize organic contaminants, their sanitizing efficiency is greatly reduced. As the level of organic contamination increases, more and more sanitizer is consumed for oxidation, therefore less is available for disinfection. Without regular oxidation, bather waste and other organic contaminants will continue to build up, potentially consuming sanitizing chemicals faster than they are being supplied. When this happens, water quality begins to deteriorate. Algae can develop or the water can become dull and cloudy. Most importantly, adequate protection against disease- and infection-causing microorganisms is difficult to maintain, and bather health cannot be assured. PoolClean (Potassium monopersulfate) plays a major role in water treatment programs for residential and public pools and spas There are significant differences between residential pools, public pools and spas. They differ considerably from one another in shape and size, design and utility, filtration and circulation, bather load, chemical treatment, and maintenance. 

However, despite these differences, the basic fundamentals of water chemistry still apply

Maintain adequate sanitizer concentrations. 
Proper sanitation protects bathers against disease and infection caused by harmful microorganisms.

Oxidize regularly with potassium monopersulfate. 
Regular oxidation eliminates bather waste and other organic contaminants, thus improving the efficiency of chlorine, bromine and alternative sanitizers and producing maximum water clarity. 

Maintain proper water balance. 
Proper water balance protects recirculation equipment and pool surfaces from the damaging effects of corrosive or scale-forming water. Potassium monopersulfate fits easily into most water treatment programs for all types of pools and spas and provides sufficient oxidation to enhance sanitizer efficiencies and produce clear, sparkling water.

PoolClean Potassium Monopersulfate

Sanitation + Oxidation = Successful water treatment 
Sanitation refers to the use of sanitizers to disinfect pool and spa water by killing pathogenic organisms including bacteria, viruses and other micro organisms which can cause disease and infection. Effective sanitation protects bathers against these hazards. Oxidation (shocking) involves the addition of chemical oxidizers to pool and spa water to burn up organic contamination from various sources

Bathers introduce a significant amount of waste through perspiration and body oils, cosmetic products, and sunscreen and suntan lotions. 

External forces like wind and rain introduce many additional contaminants. These contaminants can build up and exert a demand on available sanitizer. Regular oxidation works together with sanitation to maintain clear, sparkling water, free from disease- and infection-causing microorganisms.

Dr Venkatesh Devanur, Director R & D, RADOSOM, a Govt of India, Dept of Scientific and Industrial Research recognized R & D Centre has recognized the situation you are in and would like to offer professional advise in this regard.