I'll tell you what I do to get sparkling clear cs every time.
I wipe the rods down gently with a wet scratch pad, then a dry paper towel. If I am starting with just distilled water and no "seed", I wipe them down the first time in about 45 minutes. As the ppm rises I do it more often.... near the end the frequency is every 5 minutes. But don't worry. You only have to do it every 5 minutes for a couple of times.
My rods never become black, so there isn't anything to leave floaties.