Un identified green things

[bling bling]

Not sure what these are
Im hoping they’re not bad
They look like some type of eggs

 

[James M]

Bubble algea is bad . I suggest manually remove it(since it on your Powerhead )or emerald crabs.

 

[rkpetersen]

Foxface Rabbitfish will sometimes eat it too. Fortunately it's fairly easy to remove manually, but try and break as few of the bubbles as possible.

Here's more info: http://reefkeeping.com/issues/2002-02/hcj/feature/index.php

 

[JasonK84]

Can easily spread everywhere in the tank. Already mentioned but try not breaking them while removing.