White “colonies”

[roinesaad]

Ideas appreciated- good? or bad? white spots or colonies have appeared on the glass in our fairly new nano reef tank. Tried scraping off but they’re almost impossible to shift. They’re about 1-2mm in diameter.

 

[Fish Fan]

Look at the little spots very carefully, do they move from time to time? If so, you’re likely seeing copepods, which are very small crustations. These are desirable and a sign of a healthy tank. Good luck!

 

[shcrimps]

pics?

 

[ZzyzxRiver]

Are they little spirals? Those are spirorbid worms, apparently common in new tanks and harmless unless the way they look bugs you.

 

[roinesaad]

pics?

Here’s a not very good picture, I tried to get a shot but they’re mostly on the black right hand wall. Does this help?

 

[roinesaad]

Look at the little spots very carefully, do they move from time to time? If so, you’re likely seeing copepods, which are very small crustations. These are desirable and a sign of a healthy tank. Good luck!

Don’t seem to have moved much if at all in 24hrs