Green Star Poly help

[icey]

I have had this poly for at least 6 months and it has been growing larger and brighter. But suddenly a few weeks ago it started srinking and now it only has a few little spots opening up. It spread off of its frag piece but now the purple is vainshing and i think its dieing please help.. Its in the center of the tank in good flow towards the top of the tank for good lighting and the tank is about 80F. what can i do to help it?

 

[deton8it]

The first thing you have to do is figure out why this is happening. Have you added anything new to the tank? What are your water parameters?
John

 

[btldreef]

Need to know the rest of the parameters in the tank
What fish and inverts do you have as well. My flame angel used to like to eat that stuff, and so did an emerald crab I had.