teeny tiny white things

[krsult]

I have these teeny tiny white things moving on the inside of my tank. I tried to get a picture of them but I can't get it in focus. I would say they are about an 1/16th inch in length I thought maybe a flat worm but they move pretty quickly. Some have purple/pinkish looking "tails". Looking at them you mmight be able to discribe them as something that looks like sperm. That is the best discription I could give. And there are hundreds of them.

[cimbpin]

Copepods and/or amphipods. They are a good thing.