Something is up with my Dunkan. HELP!

[boeingn747]

I got this wwc lavender duncan coral sometime in Dec. It has done great up until the past 3 weeks I'd say. It has gotten bigger, the head had great polyp extention. It ate well, it looks like it is starting to grow a new head, maybe. Anyway the past couple weeks it's been going down hill. I posted about it and nothing really came of that post. I ended up doing a Bayer dip at a dose of 5ml to 1cup tank water for 10min. That did not leave much of an explanation. Since the dip it has really failed to open past what you see in the picture. It never closes up tighter than this but doesn't open up more. I only worrie because I had a Duncan in the past that did a similar thing and then died. I am trying to prevent that this time.
Please give me something to try or a medicated dip to try or something.
My water parameters are as follows
Temp- 78
Ph- 8
SG- 35PPT
AMM- 0
NITRITE- 0
NITRATE- 10-15
PHOS- .05
CA- 410
MAG- 1400
ALK- 8.1

 

[Rtaylor]

Maybe a bacterial infection? Could try cipro.....

 

[ZoWhat]

Can I be blunt? Can everyone handle bluntness?

This is the exact reason why ppl should not buy a single polyp, head or whatever of anything. A single polyp/head is just too susceptible to problems.

Any LPS needs to be bought in small colonies of multi (5 head minimums) to give it a chance to survive and grow.

Just my opinion though....