Help with a Bubble coral

[dilan]

I believe my Bubble coral might be in trouble. I was doing some research and noticed that on the Septa of my coral that there is some algae on it. Thats how it looked when I bought it. At the store it was totally inflated as at home but when it it night time i can see the algae. I just want a clarification that this is bad. Thanks

 

[mandy111]

It doesn't look great. Its a bit hard to see in pictures, but is the back half of that coral bare ? No bubbles. ?
IT look's like the polyps are receding, not a good sign at all
Bubble corals don't like really strong flow, have you tried changing positions ?
What are all your parameter like, in particular, salinity, alk, cal, mag. nitrates?