Irritated Frogspawn - Possible Hitchhiker ID

[Britxcdn]

Hey All, I'm having an issue with my Frogspawn not wanting to extend and a possible hitchhiker that may be the cause so just looking for confirmation.

Some background (Tank Parameters are at the end of the post):

-Purchased this piece about 3 weeks ago. Flesh band was healthy and thick extending about a full inch down the skeleton
-Got it home and gave it a thorough dip with Polyp Lab's Reef Primer, followed by a bath in some Lugol's solution.
-It went in the tank and opened up fully within the first 3 hours.
-For 2 weeks, the coral seemed perfectly fine and fully inflated.

Now last week, I noticed the coral extending about half as much as usual, and by the end of the week, not extending at all. I noticed a large red/pink line on the skeleton. At first this almost looked like paint however I noticed it seemed to move slightly day to day. My first thought was a flatworm but after comparing pictures online and given the size of it I dismissed it as a possibility.

The red patch got quite large so I decided to remove the coral and try a dip in a different dip solution (Fauna Marin's The Dip). When I took it out of the dip, I used a small plastic tool just to try and scrape the red patch to see if it could be removed. I wish I grabbed pictures of this but it seemed to scrape like jelly and in to small clumps. I still thought it had to be some type of flat worm so I used a small Q tip and dipped in Hydrogen Peroxide and carefully dabbed it on the red spot. Parts of it immediately turned white so I cleared as much as I could and rinsed it before placing back in the tank.

It's now been 2 days and I can see some of the red coming back. The pictures attached are what the coral looks like now and the red coming back. For reference the red patches were at least double the size as pictured.

My theory is whatever this is is irritating the flesh band as I do see some recession now. I have inspected the only other LPS corals I have in the tank which are 3 torches and some gonis, none of them have any signs of this red patch, and are all extended normally.

Many thanks for your help in advance, I hope I've provided enough info/detail to go on.

Here are some tank parameters and other tank info:

Tank: Water Box Peninsula Mini 25
Age: Tank is about 5 months old
Salinity: 35ppt (I check this every other day and my refractometer is calibrated each time with a 35ppt reference solution)
Temp: 77.5 - 78
Calcium: 440
Mag: 1400
Alk: 8-8.5 (Checked Daily with Hanna and once a week verified with Salifert)
Nitrates: 10ppm
Phos: 0.02
Water Changes: 10% Weekly every Friday
Salt Used: Fauna Marin

Fish Stock List:
2x Thunder Maroon Clowns
1x Pajama Cardinal
1x Orchid Dotty
1x Cleaner Shrimp
2x Conches
x10-15 Snales (variety of Trochus, Nassarius, and Astrea)

Coral Stock List:
Monti Digis
Pocilloporas
Large variety of Zoas
Goniopora
GSP (Isolated on a rock island)
Lepto colonies
2x Rock Flower Anemones
Variety of Mushrooms
Torches
1x Frogspawn (the issue)

Feeding & Dosing:
All for Reef on a dosing pump (5ml/day).
Brightwell Aquatics Coral Amino (8 drops/day)
Fauna Marin Soft Pellets, Frozen Mysis, and occasionally LRS Reef Frenzy Nano

Other equipment and filter media:
Filter Floss
Polyplab Genesis Rock in the AIO chamber
Bubble Magnus Mini Q Skimmer
Tunze Osmolator Nano ATO
Nicrew Gen 2 100 - (Frogspawn is sitting at about 150 PAR)

 

[Sophie"s mom]

Not sure about why it won't fully open, but the little white specs look like spirorbid worms to me. Harmless and will go away on their own.

 

[Britxcdn]

Not sure about why it won't fully open, but the little white specs look like spirorbid worms to me. Harmless and will go away on their own.

Thanks, as mentioned in the post, it's the red stuff f im concerned with as opposed to the spirorbids.

 

[Sophie"s mom]

Thanks, as mentioned in the post, it's the red stuff f im concerned with as opposed to the spirorbids.

Ahh, gotcha.

 

[Shirak]

You see that reddish stuff often on Euphyllia. Especially recently imported. Might be some sort of sponge or some sort of colonial bacteria. I have never seen it to be an issue even if it is up right at the flesh line. Nice flesh on the skeleton. Your phosphate is pretty low. If it came from a higher phosphate system that could be an issue and take several weeks to adjust.

Are you running carbon with the softies in the tank?

 

[Britxcdn]

You see that reddish stuff often on Euphyllia. Especially recently imported. Might be some sort of sponge or some sort of colonial bacteria. I have never seen it to be an issue even if it is up right at the flesh line. Nice flesh on the skeleton. Your phosphate is pretty low. If it came from a higher phosphate system that could be an issue and take several weeks to adjust.

Are you running carbon with the softies in the tank?

Heard on the phosphates, thanks.

Yes, running a small bag of carbon in the AIO chamber, it gets replaced every 2-3 weeks during water changes.

 

[MikeReefs]

Par and flow?

 

[Britxcdn]

Par and flow?

Par is listed above in tank parameters. It's getting around 150.

Flow is handled by a Nero 3 and another small jaebo both running one slow pulses. It was swaying nicely when it was opened the first couple weeks so I'm confident flow isn't the problem :)