I noticed Saturday that I have a slight residue on top of my water, which is otherwise sparkling clear. It looks like tiny little patches of a powdery/oily looking substance. The filter doesn't seem to be removing it. (Sorry I don't have a picture to post, I'm at the office right now) I placed pantyhose on the skimmer basket this morning to see if that would help remove it.
I've been adding CYA (granular) over the past few days as it was zero when I opened the pool. Due to some unsolicited help from my impatient daughter, I'm pretty sure we have overshot it a bit.
Could the residue be from the CYA? I'm not sure if this matters, but I'm still using out of a bucket that's three years old. Could that be a problem? I didn't notice the residue being there before I started adding CYA.