Yellow Finger Gorgonian

Hello,

I bought a Yellow Finger Gorgonian at my LFS about five days ago. The
first day I put him in, his polyps were extended. Since then, I have
not seen them extended. I read somewhere that this may be normal since
they may only be extended when the lights are off at night. I am new to
corals, and was just curious about how I can verify that this guy stays
in good health. I have also added a green star polyp on the same day
and he appears to be doing just fine.

Thanks
Jason