A little green above the water level.


Active member
Oct 11, 2015
Winter Park, FL
There a couple of spots on the wall of my pool that gets direct sunlight for a good portion of the day, and I'm noticing some green tint in the grout, but it's above the water level line. How do I manage this and keep it from spreading into the pool? That's the only green the pool's seen in 6 months! Is this common?


LifeTime Supporter
TFP Guide
Feb 6, 2015
Chandler AZ
I'll let someone more knowledgeable answer whether it's common or not.

You can always spray some bleach on it and scrub with an old toothbrush, then rinse with pool water. That should remove it.

Maybe also post a full set of test results for us to look at. How does the water look overall?


Mod Squad
TFP Expert
Platinum Supporter
LifeTime Supporter
Aug 10, 2012
FL panhandle
Yep, good plan. We get a little of that under the waterfall sometimes.


Mod Squad
LifeTime Supporter
Jul 10, 2012
Tallahassee, FL
I have an above ground pool and have to clean under the lip each year. I just walk around and spray with 50/50 bleach water then walk around with a brush then spray it all down with the hose. Good to go for another year.



TFP Expert
LifeTime Supporter
Jan 6, 2010
San Dimas, CA (LA County)
Once in a while I get some green right above the water line on the grout inside the skimmer throat. I just brush it off and raise the water level an extra half inch or so.