So the other day I noticed I had some small black spots near the pool drains. I thought they were pill bugs as in the spring/summer we get a lot of them and thought when I turned on my vac this week (try and vac pool once a week) and it would pick them up.
So pool vac ran today and the spots are still there. Grabbed my nylon brush move them around and I could only get say 1 out of a dozen to move. They're black spots on my plaster. My FC is always in recommended range, however, during the winter I haven't brushed the bottom of the pool regularly (did not "close" pool).
Spots are in the deep end, water is 42 so I'm not jumping in to scrub, so it looks like I'll get a stainless brush and try and brush the spots 7' underwater. Any suggestions other than what I found here - Pool School - Black Algae
Wish me luck!
So pool vac ran today and the spots are still there. Grabbed my nylon brush move them around and I could only get say 1 out of a dozen to move. They're black spots on my plaster. My FC is always in recommended range, however, during the winter I haven't brushed the bottom of the pool regularly (did not "close" pool).
Spots are in the deep end, water is 42 so I'm not jumping in to scrub, so it looks like I'll get a stainless brush and try and brush the spots 7' underwater. Any suggestions other than what I found here - Pool School - Black Algae
Wish me luck!