Was looking under the microscope and not sure what this is

[crazybanana2]

Two different things I saw moving, a squirmy noodle thing and I saw a circle, not sure what this is but I think my tank has dinos/diatoms, tank is one month old but phosphate was undetectable and nitrates were low (2-5ppm)

 

[Gumbies R Us]

#reefsquad

 

[Rocks reef]

You do have dinos, yes.
As far as the things you saw under the microscope. Our tanks have a plethora of microorganisms and microfauna.
But, I will see if I can get some assistance with identification.
@Jay Hemdal

 

[Jay Hemdal Verified Community Expert]

Two different things I saw moving, a squirmy noodle thing and I saw a circle, not sure what this is but I think my tank has dinos/diatoms, tank is one month old but phosphate was undetectable and nitrates were low (2-5ppm)

I see a free living nematode, those are super common. The larger round motile organism looks like it could be rotifer. Both are harmless to your tank inhabitants.