After midnight...

[JTrigger]

Hey all,

Just wanted to comment on something I noticed for the first time tonight after midnight when the lights were off... for some reason a few of my fish vertically line up what appears to be beneath the influx of flow from the skimmer... the rest of the day during wake hours they just swim as per normal around the tank minding their own business... but only late night after the lights are out they do this... ? Anyone else see anything similar?

JT