Will my orange fungia survive ?

So about 10 days or so ago, I woke up to see that a part of my orange fungia is white(made a white line), and that it looked like something ate the surface of it. I checked it and fed it and it acted normal. Everything was fine that day, but the next morning I woke up and notice that half of the mouth (lips) is missing !!! and one more white line on it. I think the coral beauty was picking on it (can't think of anything else) even though it doesn't pick at anything else, and usually just eats pellets and the frozen food I put in there. Now my fungia has not been eating, the remaning lip looks "hard". The tentacles still come out but not as much as before (from what I remember) and they will no longer move food from the body to the mouth like they used to. The orange color is still bright, and it still shines under the moonlights, but I am afraid it will die from not eating.
It seems that whatever was attacking it has not touched it since.
Should I be worried, and what should I do to keep it alive ?

A pic of it when it was healthy

 

I didn't noticed you posted a new thread about it, sorry
I was thinking, if your CB doesn't pick on anything else maybe the coral is just deteriorating due to something else.. I had one that died on me a few months ago.. it just started losing its flesh and in a few days it was gone.. so, check all you parameters, maybe something is off.. when mine died, everything was fine and the rest of my corals had no problems. I had nothing in the tank that could be messing with it... go figure

 

yeah, it really happened overnight, went to bed it was fine, woke up and it was like that

here are the parameters as of 1PM today:

PARAMETERS
Temperature: 79.2
PH: 8.02 (added some SeaChem Reef Builder to raise, I just recalibrated it today before the calibration it was 8.16)
Ammonia: 0
Nitrite: <0.3
Nitrate: 20
Salinity: 1.0237
dKH/KH/Alkalinity: 9
Magnesium: 1340
Calcium: 380
Phosphate: 0
Test kits you own: API Reef Master Kit (Phosphate, Nitrate, dKH, Calcium), Nutrafin Calcium, pH and Ammonia, Tetratest Nitrite pH and Ammonia, and Red Sea Magnesium, Pinpoint pH and salinity monitors
Liquid or Strips: Liquid
Are they Expired?: No


Tank size? 66 gallons
Estimated total system? 55-60 gallons

Reef, fish only or, freshwater? reef

Current inhabitants? What and how many?
gold stripe maroon clown
coral beauty
orange stripe prawn goby
gold head goby
eyelash blenny
powder brown tang
bubble tip anemone
frogspawn
fungia
favia
pulsing xenia (removed a whole bunch today)
acropora frags
other misc hitch hiker corals
Clean up crew?
12 blue leg hermit crabs
4 emerald crabs
3 mexican turbo snails
2 astrea snails
5 trochus snails
How long has your tank been set-up?
2 months

Substrate.
Type? 60lbs reef sand, 20lbs bimini pink sand
Depth? 2-3" depending on location in tank

Live rock.
How much? about 100lbs
Did you recently add some? no

Filtration.
Type? stock Red Sea Max 250
Protein skimmer? stock Red Sea Max 250
Do you wet or dry skim? dry
Maintenance schedule for filtration? clean skimmer every other day or when too much liquid in it, clean mechanical filter sponge once a week.
Drilled tank/hang on back overflow? stock Red Sea Max 250
Sump/refugium. What's in it and how much? no

Lighting.
Lighting type?
stock Red Sea Max 250
3x 39W actinic
3x 39W 10,000K
T5 bulbs
Age of bulbs? 2 months

Feeding
What? Pellets, frozen food (reef food and formula #2) chromaplex, freeze dried brine, freeze dried mysis, freeze dried cyclop eeze, garlic additive, coral vital
How much?
pellets enough that they eat all of it (or most, may have 5 or so 1mm pellets left)
frozen 1 cube each
garlic additive, chromaplex 1 teaspoon
mysis, brine and cyclop eeze 1/2 teaspoon
coral vital 3.25ml
How often? pellets, frozen and coral vital once a day, others every 2 or 3 days

Water change schedule.
How much? 10 gallons (a little less than 20%)
How often? once a month or when nitrate are over 20ppm
What salt brand? natural sea water
Water source? LFS

Additives/supplements used?
Liquid Reef daily (7.5ml)
Iodine 1.25ml once a week
Stontium 5ml twice a week
trace elements 15ml 3 times a week
Vitamarin-C once a week

Do you have a ground probe? no, well, not installed yet
What kind of flow does your tank have? stock red sea max 250, one 640gph pump and one 320gph pump

 

I was looking at my 3 day old Sunset Monti and it looked great then maybe an hour later his polyups retracted and the orange was brown and white on top. I cant figure it out. I believe my Bi-Color Blenny nipped looking for algae. If not your Angel maybe your Blenny pissed it off

 

If that is a current picture, it still doesn't look terrible. What you could do is get some sort of clear plastic bottle or container large enough to put over it. Drill holes in it and place that over the coral to prevent anything from nipping at it. Wait a little bit and see if it get better.

 

no that's definitely not what it looks like now, I haven't had time to take a pic of it yet, but just imagine a gapping hole where his mouth is ....

 

two months?

Two months. that should tell you something. Too young of a tank.

 

the tank was much older (4+ years) we had just transplanted everything into a bigger tank. anyway I foudn out what had done it, it was my favia, the favia was too close to the fungia and did it, how do I know ? Someone gave me a purple fungia, I had it in almost the same location, and that night, I saw the tentacles from the favia touching the rim of the fungia, sure enough teh next day that whole area was all white .....