Pretty sure this is aptasia...

[jabberwock]

Why watch? Just kill them. You can eradicate them easily before they spread.

Not sure they are aptasia...

 

[encrustingacro]

Not sure they are aptasia...

Aiptasia or not, they will still spread quickly.

 

[jabberwock]

File fish is out. I have 5 RFAs.

https://www.reef2reef.com/threads/aiptasia-eating-file-fish-also-eats-rock-flower-nems.712776/

 

[SlugSnorter]

Confirmation?

It is. Do not remove with scraper, it will just make it spread.

 

[John Bolden]

I have a file fish but he hasn't started to eat the aptasia yet. I've hear it takes them a few months to start to eat them.

 

[nuxx Verified Sponsor]

Always one of the dreaded things I'd look for in my tank.

I believe I only saw it once... I tried killing them and just spread. After some time I would just remove a rock if it had some on it. This seemed to work... dunno...

 

[jabberwock]

I have decided on my path. After much discussion and investigation, I am going to let the aptasia multiple a bit to where it can support a colony of Berhgia Nudibranches. I do not believe there are enough aptasia right now to get a Berghia colony to critical mass.

I appreciate all the insights. I will post updates as things progress.

 

[Mikeltee]

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