This just popped up in my tank yesterday.
Sorry for the poor quality.
Does this look like Aiptasia to you?
What are your opinions on it, keep it or yank it out?
I know a lot of people say they are bad to have and will take over a tank.
If you have had them before how long did it take before they got out of control?
Lucky for me it is just on a small piece of rock and I can take the whole thing out easily.