Quote Originally Posted by MattTexas View Post
A little less cloudy, but there is a large buildup of brown-ish "dust" in the crevices of the floor.
If this is occurring on vertical, rather than horizontal surfaces, it's mustard algae, not debris. It *may* be mustard algae, regardless.


anyone have advice on whether I should put some DE in the skimmer basket to test the filter
Yes, but only a few cups.


and to help the filter catch smaller particles? I have zeo sand in my filter.
No. This doesn't always work out well, and can cause problems in some cases.