What is this starting to grow throughout my live rock

[home office reef]

Please see attached pictures. It looks like it has tentacles and kind of green with a little blue. Did not respond to f aptasia.

 

[york1]

Can you get some clearer pictures? Maybe a few under white ;light

 

[home office reef]

Please see attached

 

[siege]

Huh... looks like some sort of algae maybe, but... hard to be sure. Does not appear to be a coral or anything.

Do you have trochus snails? Or anything that will eat FHA?

 

[dball711]

Bryopsis and most likely nothing’s going to eat it. Looks like you have a very healthy infestation…

 

[90gDreams]

Definitely looks like Bryopsis. You may want to consider Reef Flux or running elevated magnesium levels. Don't count on anything eating it

 

[Steve Burton]

Fluconazole was the only thing that got rid of mine.

 

[AWarnick]

I will bet good money a Tuxedo urchin would eat it if it is macro algae

 

[siege]

I will bet good money a Tuxedo urchin would eat it if it is macro algae

They generally avoid anything tough, fibrous or rubbery, along with certain caulerpas. They almost never eat bubble algae that I know of, and are apparently not considered to be effective on bryopsis.

Mine picked up and wore pieces of the atomic broccoli, but completely and utterly ignored it otherwise.

 

[Milton Reefer]

It's bryopsis. I had it pretty badly. Nothing eats it once it grows that long. Continually rip it out with your hands, and scrub the areas with a toothbrush. Coraline will start outgrowing it, and your cuc and urchins will eat it when it's short. Takes a while, but it goes away. Good luck.