I've been following the BBB rules and everything was fine until yesterday. I went out to the pool after a rainstorm and found this algae. Assuming it's mustard algae as my CL level has never gone below 4 since solving my initial problem a few months back. I'm shocking at Cl = 29 and checking it every couple of hours.
Can anyone confirm this is mustard algae? I posted over under "Everything else" because the only other place it might be hiding is behind my light fixture.
Just figured out how to post a picture,too. [attachment=0:2wafj6mw]Pool Algae post4.jpg[/attachment:2wafj6mw]