Sun coral help!

[BUXI08]

i have bought a colony of sun coral about 1 week ago...and my water parameters are

NH3/NH4=0
No2=0
NO=0
PO4=between 0.5 & 1 ppm.
sg=1.024
temp=28C
pH=8.5
Ca=340 ppm
tank has two wheeler shrimp gobies n one skunk cleaner shrimp..
.Its a 125 gal,with a DSB of 4" and approx 65 Kg of LR.The flow is 12000L/hr pump and one 3000L/hr return pump(4000 GPH total flow).
the coloney i bought is closed still after 1 week...it was open in the tank of guy i bought SC from...but in my tank it is still not opened...and its polyps r going white day by day..i have tried tupperware method but it is still not feeding...What do you guyz say?
here is the previous link posted by my friend! u can also compare the white skeleton of poylps in previous pics...Please help guyz...!

Here r some new pics!

 

[BUXI08]

1 more pic n previous link

 

[BeachBumm]

Sorry to see that happening . My avatar is my sun coral I have had for about a year now. I keep my salt water at 1.025 or 1.026 and phosphate as low as I can get it . I feed it PE mysis everyday ! To get it started in the beginning I would take some oyster feast and spot feed or blow it on the sun coral and then I would wait about 10 minutes and it would be completely open and ready to eat .It has not stopped eating yet .

 

[Toddrtrex]

If those pictures are only a week old, I have a feeling that it was in pretty poor shape when you bought it -- going to have an uphill battle.

 

[BUXI08]

@Toddrtrex: I HAVE PROVIDED the previous link..u can compare the pic out there..but what should i do now????

 

[Toddrtrex]

It appears that it is going downhill fast, I would still try the tupperware method mentioned in your other thread.

Have you noticed any of the polyps showing at all?

 

[BUXI08]

ohk...i saw one of the polyp is slightly opening but it didnt respond to the feed till 30 mins..see in this pic..

 

[singold]

I use a cut off top portion of a plastic 2-liter bottle. I place it over my sun coral & spot feed it thawed out frozen mysis using a turkey baster. It allows me to get each polyp fed & prevents fish from stealing its food. Mine is very healthy. I feed it once to twice a week. Have trained it to eat about an hour before the lights go out.

 

[mojorizn]

Hows your lighting compare to the place ya bought it?

What I mean is that a nice shady spot in your tank may help a bit.

Just an idea ...