Red Lobophylia Concern

[Guest oracleoca]

I purchased a red Lobophylia robusta? (lobed brain coral) last Saturday locally (Dr. Mac) so there was no shipping stress. I have it placed towards the bottom of my tank under a rock ledge and today I noticed that there are tiny white stringy material at some of the larger mouths and the ribs are showing around the edges. I have a green fuzzy one and it is doing fine. I fed the tank cyclopeeze and oyster eggs a couple of days ago. It is approximately 3" in diameter. Here are my tank parameters:

 

53 gallon bare-bottom display/sump

Tek 6-39w T5 hood

pH = 8.00

Temp = 77

nitrates < 1mg/l

phosphates = 0

Alkalinity = 13

Mg = 1440

Calcium = 425

 

Can you please help me and my lobo? I did, however, perform a 5 minute dip with Seachem Reef Dip Coral Disinfectant and Flatworm Exit before placing it into my display after I acclimated it for an hour.

 

Thank you