for prized plants i like bat,sea bird guano's my self.
what kind of medium is it in? temps? light source?
is it actively growing? flowing?
is it showing signs it needs feeding? no? then leave it be for now. most impotently water it correctly.
can't go wrong with worm cast tea,....kelp meal/tea,fish h. ete ete
what ever you do don't over feed, watch the plant and it will tell you what it need's.
maybe down the line repot with a really good draining nutrient rich mix?
research it more.