Weird bubbles growing on my acan

[molcott]

Can someone tell me what this is and what I should do?

 

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[VTBig053]

Looks like bubble algae. You can remove it manually but be careful not to pop the bubbles. I believe emerald crabs will eat it as well.

[Jon Lazar]

Definitely bubble algae.  I would pop the frag off and throw away the old plug.  Then pick off every last bit of valonia before regluing.

 

You need a biological control to keep it from returning.  Emerald/mithrax crabs will eat it, but slowly.  Rabbitfish will likely eat bubble algae.  I had a Desjardini tang that loved it.

[molcott]

Thanks

 

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[zygote2k]

Everyone says "don't pop them"...

How do you think the rabbitfish or emerald crabs eat it?

 

A common algae found on drag plugs.

As started previously, pop the coral off the plug and discard the rest.

[molcott]

I think I got the bulk of it I popped it off the plug and put it on a new one will pick some emerald crabs later for good measure

 

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[freshfins]

In my experience if you resolve your excess nutrient issue the bubble algae disappears.

[WheresTheReef]

No need to buy the emerald crab if bubble algae isn't out of control.