Microscope images, what is this?

[Exus]

So I finally decided to get a microscope, what am I looking at (identification). Scope came with a cracked lens, so rip.

Also found this long filament thing that wiggles around.

 

[taricha]

a mix of derbesia (GHA) and coolia dinos.
(last pic is a nematode. They live everywhere.)

 

[Kooz21]

Here are some images from my tank. Not sure what anything is, but looks pretty cool!