I got this coral from my lfs for 20$ a couple months back. I think it might be an acan but to be honest I have no idea what it is. It has long tentacles that come out after dark and during feeding. It is fleshy similar to a trumpet coral and balloons up when fed too. It doesn't appear to grow fast since it has not grown much since I got it. Thank you in advance for the help! This photo is from a little while after i got it.
And these two are from today. The things that look like dirty glass around it are the tentacles I mentioned.
And these two are from today. The things that look like dirty glass around it are the tentacles I mentioned.

