What is the brown stuff that builds up if you don't brush?

TomAtlanta

Well-known member
Sep 10, 2011
327
Atlanta Ga
#1
What is the brown stuff that builds up if you don't brush and vacuum? If I run my had across the bottom where I see it, it goes away like a fine powder. It isn't algea is it? My chlorine is fine and the water is clear.
 

Richard320

TFP Expert
LifeTime Supporter
Jan 6, 2010
20,322
San Dimas, CA (LA County)
#2
Re: What is the brown stuff that builds up if you don't brus

Probably dust.

I know my pool chemistry is perfect, and I can still raise a cloud of dust with the Wall Whale, especially if it's been windy. If your windowsills, patio table, etc. have dust on them, so does the pool. 'cept it sinks in the pool and likes to cling to the walls for some reason.