Have you considered employing a separate strategy for loosening/removing biofilms? Enzymes such as Interfase?
Also, candida biofilms look very different from bacterial ones. They don't look like mucus and aren't stringy. They are white to off white/yellowish and totally opaque, and tend to be thick/chunky. When you pass one in stool it will look like a white-ish patch/chunk/streak/smear. They can also make free floating biofilms called "fungal balls."
They can combine with some bacterial species, such as staph, but I've only seen microscope photos of that. Not sure if that's likely to happen in the gut.
Have you checked for bacterial overgrowths? They can cause similar symptoms.