why adding chemicals to the pool water is done instead of draining and cleaning

Question

I see a lot of videos of cleaning pools and I don’t understand why heavily dirty pools aren’t just drained instead of adding things to it. Is it cheaper? Aren’t the chemicals harmful? Is the concentration harmful?

In: Other

Answer 1

Chemicals are a lot cheaper and easier to use. They can be harmful. After all, their job is to kill things. So, it’s generally advised not to put so much in that it kills people too.