2 - POOL WATER DISINFECTION WITH SALT ELECTROLYSIS SYSTEM
Salt electrolysis system has other names such as salt chlorinators and the salt-water chlorinator. Salt electrolysis system just supplies the hypochlorite acid and this means you need to apply salt electrolysis system to the pool system and than add enough rock salt to the pool water and system. Through this electrolysis system chlorine converts to sodium hypochlorite and disinfects the water.

Health risks!
1. The fact that electrolysis system’s primary material is chlorine, it contains all of the harmful side affects of chlorine.
2. It has corrosive affects on metal accessories
3. It has initial installation expenses, however it is cheaper than other automatic chlorine generators.

3-) OXYGEN , HYDROJEN PREOXIDE PEROS PERSULFATE SYSTEMS ;
“Oxygen method “ is a little tricky method, because this type of disinfection contains some chemicals for pool treatment however it is not just “oxygen“ as we know it. Oxygen has just stocking affect with reducer; hence, it is not suitable for public pools.
Hydrogen peroxide is widely used by textile industry for its strong bleach affect on fabric

4-)OZONE SYSTEM ;
Appropriate ozone system is very costly, that is why most of the ozone systems out in the field are cheap ozone systems that are not even working properly.
Ozone is toxic, corrosive, abrasive dangerous gas.
It gives you very short time of disinfection, if you do not use any stable disinfectant, you cannot prevent bacteria reproduction.

5-) UV SYSTEM ;
UV light is only affective on the surface of the pool not inside of it. It gives you very short time of disinfection, if you do not use any stable disinfectant, you cannot prevent bacteria reproduction.

6-) COPPER & SILVER IONIZATION SYSTEM;
It causes high metal waste in the pool.
These metal ions have high risk of internal organ health. (Kidney, liver and spleen and internal organs are main risk)
It is not proper to use other than decorative pools.
Because of the ionization, it will remain copper & silver ions at the bottom of your pool and it may damage your pool circulation system.
According to some scientific researches, being affected by metal ions causes memory problems in long term.