Little white specks

[hopperjl16]

Any help on ID'ing this stuff? They are little (1-2mm) organisms that move quickly like little water bugs. They appeared overnight and seem to be localized on the glass where I have some algae. My tank is only 2.5 weeks old and I just introduced some invertebrates (emerald crab, fire shrimp, astrea snails, nassarius snails and hermit crabs) 4 days ago. I started with live rock so I suppose they could have rode in on that too.....
Anything I need to worry about?

Thanks!

 

[melypr1985]

Probably pods... they are good to have!