What do you think about Tube anenomes?

[Kabong]

I'd have to agree with you'd have to watch what you put with them.
A clownfish could probably build an immunity to the sting but if it went barreling in there right off the bat. I doubt the results would be good.
In my case i have a green clown goby who has to sit in every coral in my tank.
I worry that his first encounter would be his last.