Weird bubble thing was attached to my duncan

[Fruity Reefer]

Duncan was pretty ticked about it, but it was very firmly attached

 

[Fruity Reefer]

To add more info, there are 2 clowns, a fire shrimp and a few various snails and hermits in the tank.

 

[Airwolf]

Bubble algae.

 

[Joe31415]

It's bubble algae.
You're going to get (or read) a *ton* of advice, some of it conflicting, on how to deal with bubble algae. The only thing I'll mention, is that when you get the suggestions to use Vibrant, read up on it before you use it. Don't just go dumping it into your tank.

Also, start looking around your tank. I promise you have more.

Edit: And before you go into panic mode, it's really not that big of a deal. It's not going to hurt anything, but it'll spread if you don't stay on top of it.

 

[kdx7214]

It's valonia (bubble algae). I have it in my tank as well. It can take over if you don't do some simple manual removal from time to time. Fortunately the stuff is really easy to remove. I tend to use a toothpick to do so. If I get a rock with a heavy colony on it I'll remove the rock, pick off the stuff, and use an eyedropper to put a few drops of hydrogen peroxide on the spot(s) where it was. That will kill anything left behind (as well as coraline algae, so take that into consideration).

As @Joe31415 said, some are going to recommend Vibrant to kill it. This stuff is a pesticide and can have some awful side effects. I've known people who have used it from the start and swear by it, but I've also known people who have had whole tanks crash when they tried it. YMMV.

 

[DJC]

Manual removal has always been the best for me when I do water changes I identify which rock needs to come out scrub it all off place back in tank good for a fair while before you rinse and repeat

And like is said above honestly it does not harm anything just looks yuk when it starts to colonise more but if your on top of the scrub you will never get to that point and scattered remnants looks kinda interesting when viewing your tank

I got red bubble and grape algae and it looks kinda cool but I do control it a lot

 

[EeyoreIsMySpiritAnimal]

Edit: And before you go into panic mode, it's really not that big of a deal. It's not going to hurt anything, but it'll spread if you don't stay on top of it.

This is good advice. There are even places that sell it as desirable macroalgae

 

[kevgib67]

Emerald crabs eat it, they cleared it out of my previous tank.