id help

[nick96ss]

i did some sump maintenance yesterday flipped the cheato changed the pump to my skimmer thats it
this morning i go down stairs to do a water change and i find these things all over the sump , what are they, should i be concerned ?

thanks

 

[nikkibabee]

http://www.manhattanreefs.com/forum/identification/51795-what-heck-these.html

 

[nick96ss]

thanks nikki
i thought they were all right just wanted to make sure