This wasn't supposed to happen again, but due to various factors I am SLAMIng for the second time in a month. Ugh. In the process of cleaning everything diligently, I was looking in my skimmer and above the water line, where I had a residual plaster dye stain (I don't know why I never scrubbed it off before, but I didn't...) I noticed some yellowish brown. I used a magic eraser to easily remove the dye, but the yellowish-brown stuff was rougher and took more scrubbing to remove. It left a slight yellow stain on the inside walls of the white plastic skimmer. I didn't think anything of it, but in doing some reading here I realized with alarm that it might be mustard algae.
Does this sound like mustard algae? If so, how do I proceed with my SLAM? Do I still aim to pass the OCLT at regular SLAM levels and then bring it up to Mustard Slam levels for 24 hours? How do I know when I'm done? One trouble is that I am at a CYA of 80 for my SWG so it's going to take a boatload of bleach. What do you recommend?