Do I need chlorine if I have a filter cartridge?

Question

I have a 10ft by 30 in pool, and i am not planning on replacing the water everyday. Do I need chlorine or chemicals to clean the pool if I have the filter that came with the pool?

Answer 1

Chlorine and a filter are two different things.

Chlorine is a water sanitizer as it kills bacteria.  The filter removes particulate matter like hair and dirt.

So, you need them both.

Answer 2

unless you like slimy green stuff at the bottom......yes