Need Help With My Tree Coral!!

[snapper1]

I have had this leather tree coral in my tank for 3+ years and up until a week ago it has been very happy with good growth.
Aquarium:
Size-55 gal
Temp-76-78 F
Salinity- .0235-.024
Here's what i've changed in the last week:
Added some inverts-scarlets, turbos, emeralds and 1 brittle starfish.
Added 1 orangespot goby.
Added 1 zenia coral.
I also covered 3/4 of the aquarium top with glass because the orange spot gobt can be a jumper. All my other corals appear to be fine.
Any ideas as to what could be wrong and is there a cure?
Thanks for any help,
Darren Hohaus

 

[saltfan]

Originally Posted by snapper1
http:///forum/post/2893884
I have had this leather tree coral in my tank for 3+ years and up until a week ago it has been very happy with good growth.
Aquarium:
Size-55 gal
Temp-76-78 F
Salinity- .0235-.024
Here's what i've changed in the last week:
Added some inverts-scarlets, turbos, emeralds and 1 brittle starfish.
Added 1 orangespot goby.
Added 1 zenia coral.
I also covered 3/4 of the aquarium top with glass because the orange spot gobt can be a jumper. All my other corals appear to be fine.
Any ideas as to what could be wrong and is there a cure?
Thanks for any help,
Darren Hohaus
Xenia release toxins into the water column. Your tree may not like it. You run carbon in your system?