This is a consequence of the fact that you spend little time in the pool and cleaning it. I advise you to either call professional cleaners or try cleaning the pool yourself. To do this, you will need quality pool cleaners. I don't understand how people can buy a pool without wasting time cleaning it. At the moment I can only offer you a site to help you clear this puddle, which has various pool cleaning products (
homendgarden.com). Personally, I already got some of the pool cleaner from there. If the cleaning products do not help you, then it is already worth contacting professional cleaners.