White very small bug help

[rogergolf66]

I have a very small like the size of a pin head walking on the walls of my refugium. what are they are they good or bad.

help

Thanks Roger

[papagimp]

coepods.....very good. Dose phytoplankton in the tank to keep numbers up otherwise they may die off to an extent or completely. Pods are one of the better reasons to have a fuge in the first place, provide a neccessary breeding grounds for them so the rest of the display can have "free food!"

[Randall_James]

copepods

http://www.mytankpics.com/tanks/albums/userpics/10002/copepods.jpg