Hi all,
I have noticed an increase in black and smudgy brown spots on the sides and bottom of my inground marcite pool. They are less than dime shaped in size. I check my pool levels once a week and everything has been in range. I've tried brushing them with a nylon brush as well as black algaecide to no avail :? Any ideas or thoughts?
Thank you!
I have noticed an increase in black and smudgy brown spots on the sides and bottom of my inground marcite pool. They are less than dime shaped in size. I check my pool levels once a week and everything has been in range. I've tried brushing them with a nylon brush as well as black algaecide to no avail :? Any ideas or thoughts?
Thank you!