Strange Algae

[Brodie]

I noticed some type of algae growing all over the very top, and back of my tank. It looks like a miniature fern leaf & about 1" long. Does anyone have any information about this algae? Should I be concerned? I have 4 Chromis and 1 Clown, they haven't touched the stuff. Would it be a good idea to pick up a Lawnmower Blenny?

[sdellin]

I just picked out a leaf of that recenty, don't know what it is though. I assumed that since I'm having an algae problem, best to get rid of it.

Experts?

[ZoozFishMaster]

Most likely fern caulerpa, a macroalgae. The stuff is great for exporting nutrients (phosphate, nitrate) however it can being a pest algae because if left unpruned it can take over the entire tank (suffocating out corals and other invertebrates).

Tangs will definitely eat it. However, I'm not sure about a lawnmower blenny. HTH

[Brodie]

That's exactly what it is. I just did a google search and found it. The consensus is to get it out? I have a 29 gal, so I don't think a Tang would be appropriate. Anyone have any luck with Blennies eating the stuff? Kudos Zooz...

[Gatorfreak]

Oh yeah, I've got that stuff. I can tell you it grows and spreads pretty quick. I know Astrea snails don't eat it. Best thing I've found so far is just reaching in and pulling it out when I see it. Still waiting to see if my new Tang eats it.

[seaham358]

how much is there? Just pull it out of the tank..

[Brodie]

Not a ton yet, but from what I'm being told, it's a good idea to get rid of it now. Thanks for all the help guys.

[haus]

I had some, then I added emerald crabs and it vanished. I watched my largest one rip it off a the lr one day. Kind of amusing. No problems since.