I wouldn't worry about your maroon clown... his behavior is typical. We don’t have anemones in our tank either… our maroon clown hosts in our hammer and bubble coral.
As far as your sunflower coral goes, I’m assuming you are talking about a goniopora… also known as a flower pot coral. As you may or may not be aware, gonioporas don’t usually live long in a home aquarium… they usually don’t last more than three months or so.
Here's a pic of a goniopora so you can compare it against your coral to see if that's what you have...