Invasive marine plant! Please help!

[Samaki]

This plant overran my 27 gallon once before. I tore it down and had no lights on for 2 months. Now it's back! I don't know what it is or how to get rid of it...

 

[Mike J.]

I'm pretty sure it's Caulerpa vellicillata.

 

[Eienna]

If it's caulerpa, I think really the only thing you can do is keep pulling it out. :/

 

[Mike J.]

Welcome to Reef 2 Reef!

 

[Samaki]

Thanks guys! I have been researching for quite awhile on this little green devil with no results! I have read that blue knukle hermit crabs will eat this specific species. Otherwise there is the peroxide treatment... Have you heard of results from either method?

 

[Mike J.]

I have used the peroxide dip with good results in the past. I did it on a Zoanthid covered rock that had a bad case of hair algae. And, the truth is, those Zoanthids never looked so good as after that.

 

[Eienna]

If you peroxide-dip the rock, you may kill the beneficial organisms in it.