pls help w/ sps

[CHAR3]

i got this poccilpora from premium aquatics a few weeks ago and its been doing great. the frag has already encrusted the plug just since i got it. well the past few days it looks like the flesh is just flopping around and then falling off.i have about 20 some other sps and they are all doing good .

my tank is a 110 tall w/ LB 250 radiums. 2 tunze 6100 and 1 6055,
cal 410
alk 9
mag1320
ph 7.99-8.1
temp 79-81
i know the ph is low but its been that way all winter and i cant raise it but everything looks good so i dont worry about it.my other test kits are old so im not sure what my nitrates and phosphates are but i have no algae problems.i have 4 fish 2 maroon clowns a flame angel and a copperband butterfly. let me know if you need more info. thanks

 

[Archreefer]

I had the same problem with a hydnophora that was in direct current of my mp-40, when I moved it it was fine. Just a word of caution with this sps, I had it in my tank and it became a huge problem with spreading. The mother colony has been removed almost 1 year ago, and new ones pop up weekly.

 

[CHAR3]

OK i moved the frag so we"ll see how it does. does anyone else have any more input?