Euphyllia Tentacles Stuck Together, What's Happening Here?

[demon_speeding]

Good day everyone!
Looking for some feedback on my Euphyllia. It was looking great this morning, but now the tentacles are stuck together with some kind of firm purplish substance. The skeleton also now has what appears to be a sponge growing on it. Any ideas what's happening here? The other branches are all good to go.

 

[FreshSaltH2o]

BJD maybe what’s your po4

 

[demon_speeding]

BJD maybe what’s your po4

.25 ppm

 

[demon_speeding]

Update - pulled the euphyllia and attempted to get a sample to review under the microscope. Growth on skeleton appears to be coraline algae. The tentacles were stuck together with the below. It doesn't move, doesn't appear to have a mouth. Bottom is red, top is a grey/green. Makes me wonder if it's a tentacle from my rainbow bubble tip anemone? It's weird whatever it is.

 

[FreshSaltH2o]

Woah

 

[FreshSaltH2o]

Update - pulled the euphyllia and attempted to get a sample to review under the microscope. Growth on skeleton appears to be coraline algae. The tentacles were stuck together with the below. It doesn't move, doesn't appear to have a mouth. Bottom is red, top is a grey/green. Makes me wonder if it's a tentacle from my rainbow bubble tip anemone? It's weird whatever it is.

Cut it open? Gloves and goggles?

 

[demon_speeding]

.25 ppm

Scratch this. Retested and came in at 0 on an API test. ICP test is showing pretty low as well. Maybe 8 ppb. I actually bought phosphate to does to raise it a little.

 

[demon_speeding]

Cut it open? Gloves and goggles?

I didn't cut it. I got it under some direct lights and started poking around, I'm pretty confident it's an errant tentacle from the nem. There is a Sebae that is within close range. I'm guessing it was him. The Sebae has Velcro like tentacles and this thing stuck to me when I touched it. My money is on him.

 

[demon_speeding]

Follow up for anyone who finds this later -
The culprit was the Sebae. It sits on a rock near a gyre pump, so it gets a lot of flow. The tips of several tentacles got twisted in the "breeze" and broke off. One landed on the Euphyllia and make it appear stuck together. What happened was the tissue of the Sebae adhered to the tentacles on the Euphyllia and gave it the odd appearance in the above photos. Remedy was to lift the Euphyllia near the surface (not all the way out of the water) and use a pair of tweezers to remove the offending tentacle chunk. No harm to the coral or the anemone. Both are looking great this morning.