So Last Saturday I spent the day brushing the sides and vacuuming the entire pool, balancing chemicals and adding a bunch of bleach Because the entire pool bottom and walls were covered in yellow stuff. I was worried it was yellow mustard algae because pollen isn't that bad I think in the fall. I SLAMmed the pool several days but every night I passed the overnight FC test and my CC remained at 0 or 0.5. But after I vacuumed the pool the water was very cloudy (I assume because I stirred all of the dirt up with the brushing and vacuuming). It stayed cloudy but was clearing slowly as I was running the filter 24/7. Here's the kicker: But as the water cleared the yellow powder returned to the bottom of the pool. Again my FC and CC are testing well and I am taking the CYA in to account, it seems like I don't have anything growing in the pool. So what is this yellow stuff and how do I get rid of it? I have all my past #s (if you need them) but here are the ones from today.
CYA= 60 ( i use to use dichlor but now use bleach)