Cuttlefish tank cycling.

[ekocak]

I've had another explosion of those little free swimming shrimp again. I tried to get photos but they move really fast. I did catch some (not great) video, but maybe it'll give some idea.

 

[DWhatley]

In the video they look almost like hatchling fish. Whatever they are, they should be good food if the parent source is not consumed.

 

[ekocak]

They remind me a little of "fairy shrimp" but those are freshwater.