Feel free to stick it in your tank as Fox corals are able to live for quite a while under pathetic lighting...when nipped at by puffers. Btw - a 38g is too small for a tang...like you care?
I guess you're "getting PC's in July"...but DO NOT buy any more corals until you have the knowledge AND the lighting to support them.
Bottom line, YES I am flaming you, but you can slow down & actually research the requirements of the things you ALREADY have. That really isn't asking THAT much of you.
RG.