There's also some dust there. It's on a nano, so I don't have a skimmer. Any idea how to get rid of them? I have tried removing them with a spoon, but that didn't seem to work. The bubbles appeared after I performed a drip water top off.
A powerhead to ripple the surface and a skimmer to remove the surface scum...left intact it can and probably will interfere with the gas exchange process which keeps your tank oxygenated....
