I'm having problems with particulates in my tank too, but I've been planting new plants and cleaning for the last few days, so I'm assuming things will settle down here pretty soon. I've been cleaning the media in my HOB
filter every day, sometimes twice a day and it definitely needs it when I'm doing it.
I also think I've been feeding the bottom of my flake jar of food which is too fine.
I'll read with interest any other comments.