Pool water must be chemically maintained regularly

There are several ways to make this job easier. For example, you can get an automatic dispenser, on which you set the desired amount of chemistry and everything is done automatically.
A UV lamp minimises the formation of mould, bacteria and algae due to ultraviolet radiation. Chlorine and other chemicals can be reduced. Copper and silver based devices produce harmless metal ions that can destroy algae, bacteria and viruses present in the water.
The best solution is the use of salt water, where the pool water is electrolysed and disinfected. A low concentration of sea salt is used, at least 0.4% (half as salty as tears).