ricordea/ricordia ease of caring for?

hello i would like some help with this coral. what is the care level required? what water conditions do they prefer and what are they intolerant of? what specail requirements are needed to keep them? and which would be the easiest of the species to start out with. currently i have star polyps, button polyps, kenya tree, toadstool and some hairy mushrooms all of which are doing well. the star polyps are spreading quickly and the mushrooms and split 2x on their own. thanks for the advice.

 

ricordia?

here's a link that might help

http://www.peteducation.com/article.cfm?cls=16&cat=1930&articleid=2367