Copepods or nudi?

[TracyFacey]

Not sure what they are and it's hard to get a good picture. They have legs and seem to hang out on the sides of my 3 gal picotope tank. It seems that they are reproducing rather quickly.

 

[mr_X]

They are isopods. they are seen in new systems and disappear as fast as they came.
Is this them?

 

[TracyFacey]

You win! That's them! I was so baffled because they were multiplying so quickly. I asked my buddies that have tanks but they haven't seen them before. Thank you!