Help! Elegance under attack. Not the syndrome.

[davidm777]

My Elegance was doing great had it for a couple of months. It has a little bone showing but that's the way it came and has not been melting. It has been 3 days that has been acting wierd like shrinking but at specific spots. Yesterday I got like blood vessels off the shrinking spots.
This morning the elegance open up a little more and I have seen the white chingas on it. I suspect is this white stuff I have in my tank. Every now and then seems to bother some corals. It's like bags of some sort, I have cut them off and they have like red worms inside.
.......... which as I am writing I remember seeing my cynarina being "attacked" by a bunch of white worm looking dudes. I just let it play off and the next day I saw the cynarina burping them dudes from the mouth.
Sorry for rumbling. Here the images I woul like to hear your thoughts... I am a little edgy with the elegance. Thank you for your time.

 

[Tahoe61]

The first image of the Elegance Coral might be mesenterial filaments, you don't remove those, it part of the coral structure.
The second image is a marine sponge, likely harmless.

If you could include basic chem, alk, sg, calcium and nitrates that would be great.

 

[davidm777]

These I measured yesterday.
Salt- 35ppt Milwaukee
Kh- 8 API (Aquaforest on order)
Ca- 450 salifert
Mg- 1305 salifert

These I measured last week, usually pretty stable. I normally test on the evenings.
PO4- .2 salifert
NO3- 10 API (Nyos on order)

 

[davidm777]

Also, on 4/30 I started dosing the Modern system by hand twice a day coming from All For Reef.
On 5/24 I installed dosing pumps to start dosing.
During this whole process I haven't had any significant swings.

 

[Koty]

How old is your tank?

 

[vcnt]

This looks like the sponges that came on my TBS live rock

 

[davidm777]

The system ir been running for about 2 years, is a 20gal. Using T5s. Filtration is polyfill for quilting and a skimmer. Sump is slightly larger than the display. The first year I used carbon and rowa from time to time. I moved away from that by feeding frozen (mysis and cyclopods) one day and TDO pellets the other day. Used to do 5gal water change every week. Now days for about a month I do WC one week and DYI coral snow the other week. I do have PNS on order to be more complete on the coral snow routine.

Here a picture from 4/17 when I added the clam and the trachyphyllia on the left. The Trachy did die... it only lasted 3 days so I suspect something was up with it. The clam is doing fine.