What is this!!!

Geo Reefer · Jul 30, 2020

Hi can anyone help me identify this thing. One on live rock and 2 in built on over flow box.

Mike N · Jul 30, 2020

Pretty sure that is aiptasia. Sorry!
There are many methods to deal with them, and many threads on this forum about them.

Pdash · Jul 30, 2020

Aiptasia

NashobaTek · Jul 30, 2020

Aptaisia is what it looks like

malacoda · Jul 30, 2020

It's either aiptasia or majano. Either way, you'll want to read up on ways to get rid of them. Don't just try to pull them off the rock. If you miss any, it'll come back.

Geo Reefer · Jul 30, 2020

Ok thanks everyone for the help going to get a peppermint shrimp to solve the problem.

Cell · Jul 30, 2020

Definitely aiptasia. I might be seeing another small one under that zoa plug.

Geo Reefer · Jul 30, 2020

Will Nudibranchs be the way to go?

PTXReef · Jul 31, 2020

Geo Reefer said:
Will Nudibranchs be the way to go?

I superglued the hole where I saw a tiny aiptasia, haven't seen another one since (may not be the best method if there are multiple and you can never be completely sure they are all gone but may have worked in my case).

Other methods include natural predation but IMO may not be the best idea to get a berghia nudibranch because it'll starve after it eats all the aiptasia.

Some reefers run hot water over them to kill them but if you have zoas on that rock I wouldn't recommend it just in case of potential palytoxins. Good luck and stay safe!