Do I need to dose with anything?

If they are looking healthy, I really wouldn't do anything to them, unless I saw something bad... However, if you're using the standard Instant Ocean salt you may want to change over to the Instant Ocean Reef Salt at least, the reef salt has a bit more pH and trace elements included. Not a huge change, but it could be beneficial.

Another quick bit of information that may be helpful, if you don't have a test kit for it, don't dose it.

Cheers!