Concerned about my new torch coral

[TonyOrlando]

I bought a brown torch coral with three stems on it 4 days ago. For the past 3 days it has looked great and healthy. Today i came home from work and seen that one of the stems tennicals are a darker purplish/brown color and arnt sticking out like the others are and isnt polyped as much. Should i be concerned and if so what should i do.
All my parameters are perfect, except i do not have a test kit yet for cal or alk, but have been dosing my tank for 1 month with both. My tank is 3 and 1/2 months old.

 

[Travis L. Stevens]

It's too hard to tell without the parameters, especially Ca and Alk. Also, what lighing and water flow do you have.

(BTW, Torch are usually considered LPS )