I agree with the post above. It hasn't grown 2 inches since the 12th of March. I don't want to rain on your parade, but these corals require very special care related to feeding. They are totaly non-photosynthetic.
You'll get conflicting information with the baby brine. I've heard a few sources say that dendronepthyas and scleronepthyas are huge consumers of baby brine, but other sources say that that that meal is far to large and - although ingested, the brine are not digested. You can try, but even if the carnation tree eats, it will require near constant availability of prey.
Google the following to see and read about a succesful azooxanthellate setup that includes healthy and growing carnation trees.
"reefkeeping azooxanthellate matthews" - click on the first result.