[Nevin]

Got a Rio nano skimmer today. I can't run it out of the sump area as planned as it needs a stable, high water level. Too early to say how it will work--after a few hours, lots of bubbles in the tank and white foam starting to rise up the neck.

Should I scrape the brown diatoms off the glass or just leave it? There are lots of little "bugs" (pods?) feeding on it.

Whatever the two kinds of creatures are on my rock that I mentioned, I seem to have lots of both.