After reading all of your helpful replies and doing a little Googling, I decided to ask my dad some more questions and well, clearly we had some communication breakdowns in our first conversation.
So apparently he isn't having "specks" or "sediment" but more of a dark color midstream. He said that his urine will start out clear and then change to a darker color and then return to clear. He said it happens sometimes once a day, sometimes fewer and once twice in a day. And here's the part that makes me want to shake him.... it's been happening for months! Gahhh! I always tell him to tell me if he has any changes in his urination and then he lets this slide. Any guesses? Also he said that it was happening BEFORE his last PSA test. PSA was up a bit but his other labs were pretty good. (Potassium was a bit low, glucose up a bit)
He says he feels great. Urine stream is strong and he isn't having frequent urination.
I think I'll reach out to his oncologist when we get home from vacation but I'm thinking this isn't an emergency kinda thing since it's been happening for months. Any thoughts?
The hospital is killing my father and I'm helpless. 
What about my dad's prostate treatment?
Not diagnosed yet, but in research mode...looking at proton therapy especially
I just was reading about Diet controlling cancer (again)
Severe Edema during last couple cycles of docytaxel and increasing one month later. 2 lbs added per day. Severe pain. Spreading higher up
