I'm hoping to get your opinions on a sick bubble tip that I have. I am keeping a 29g Biocube with stock lighting (PC). I currently have several soft corals and LPS that are doing really well and have grown quite a bit since I added them. My BTA has been in the aquarium for about 1 month and has recently been declining (or appears to be). I have been feeding it one small (1/2 inch) chunk of scallops weekly and it has been eating well until now.
Currently, the base remains securely attached to the rock, but the tentacles have retracted severely. For the majority of the time, the mouth remains closed. It has been closing up at night, and opening when the lights come on, with no inflation of the tentacles.
I recently returned from a weekend away and noticed that my nitrates were high (20-30), so I did at 25% water changed and bought new chemipure elite for the filter. I tested the rest of my parameters and they are in check.
I attached some pics and I am hoping someone can help me out (sorry about the quality - i'm relying on my iphone for pics for now). Does it look close to death? Should I remove it now to prevent harm to the rest of my tank? Do you think the nitrate spike is related to the health of the BTA?