can you id this

[fairlan]

the clear green balls they look like marbles you would put in a fresh water aquarium

 

[fairlan]

the one to right has coraline algae growing on it

 

[mfinn]

Bubble algae

 

[fairlan]

good or bad?

 

[mfinn]

bad

http://reefkeeping.com/issues/2002-02/hcj/feature/index.php

 

[mmkeeper]

Remove it whole do not pop it. It will spread everywhere.

 

[fairlan]

how do i remove it?

 

[tdgates10]

Either take the whole piece of rock out or IMO leave it cuz you have a very high chance of popping it and then it goes everywhere.

 

[returnofsid]

Definitely bubble algae. You can gently twist it to release it...usually. Have a syphon going near the bubble while doing this in case it does burst. Then you'll end up sucking up most or all spores. Another option is Emerald Crabs. They are known to help out with bubble algae...although I'm not sure how they eat them without the bubble popping and spreading...lol. I have a couple bubbles in my tank that came in from some Caelurpa I purchased to feed my Tang. However, it's never spread beyond the 2 bubbles that I missed before putting the Caelurpa in the tank.

 

[fairlan]

just my luck happens to be on the very bottom rock in a 25" deep tank

 

[soyadrink]

Those things are so hard to pop! I wanted to pop a big one and it just bounced away. kinda reminded me of a basketball.

 

[mfinn]

Try removing it with a syphon hose during a water change. It's not a total disaster if it pops, just a pain dealing with new outbreaks.

 

[fairlan]

Thanks for all the info will do water change today and hopefully get these things out