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

Not an expert by an means, but I’d bet just draining the water every time your pool was dirty would be such a waste of water. Chemicals at least prolong the need to drain.