Is this STN? Acropora

[BurtMacklin]

I put several new corals in my 9 month old 65 Gallon tank 2 weeks ago. The softies, LPS, and one SPS (montipora) are doing well, but one acro is losing color and the other acro which arrived brown looks like it is bleaching at the base. Should I apply super glue? I'm worried it's too small to frag. I posted an example of what was advertised for this acro too. It has never looked that good. The frags spent a week in the sand bed before being moved up (probably too little flow there). The Kessel also ran a 14 day ramp up acclimation period and is at peak now. It runs a 12 hour day with ramp up/down.

SG 1.025
Temp 78.7
pH 8.15
ALK 9.6
Ca 420
Mg 1140
Phos 0
Nitrate 10

Alk has moved some
10/5: 9.9
10/18: 9.45
10/23 9.6

Kessil apx9 light
2x 1600 gph power heads with the acros in direct flow
60lb live sand
50lb live rock
2x black phantom clown
2x Banggai cardinal
1x royal gamma
1x tail spot blenny
15x snails
Soft: pulsing xenia, zoanthids, palythoa
LPS: Duncan, frogspawn, blastomussa, platygra
SPS: montipora and 2 acro

 

[blaxsun]

Are you asking if you should apply more glue or glue it to the rockwork?

 

[BurtMacklin]

There are several threads on this forum discussing applying glue to the bleached portion up to the healthy tissue to prevent the spread of STN. I am not talking about gluing it to the rocks.

 

[BurtMacklin]

Color corrected to better show the issue

@vetteguy53081 any advice?

 

[mdb_talon]

Not suggesting it is the issue but i would inspect very closely for pests as a starter(specifically aefw or eggs). I cant see any evidence of that from photos but always my first thing to check when an acro is dying from the base up slowly.

As for gluing to stop STN i never really had any luck doing so but it is worth a shot i think.

 

[BurtMacklin]

Not suggesting it is the issue but i would inspect very closely for pests as a starter(specifically aefw or eggs). I cant see any evidence of that from photos but always my first thing to check when an acro is dying from the base up slowly.

As for gluing to stop STN i never really had any luck doing so but it is worth a shot i think.

These came from WWC which are notoriously very clean, but they were also dipped in Bayer and I didn't have any pests come off.

 

[BurtMacklin]

Bump

 

[X-37B]

I have used coral putty to stop stn when a mushroom released and killed an area on it. Had to do it several times to different corals but it did work.

 

[BurtMacklin]

Update: I treated this and another new SPS frag with ampicillin q24 for 2 days. The other frag has crazy good PE now and this one hasn't lost any more tissue. I was going to frag it before that treatment, but now that the tissue isn't regressing anymore might it grow back over the old skeleton? This one hasn't shown any PE and hasn't had any color return yet (I know this can take a long time).

 

[BurtMacklin]

Mislabeled the dates, I'm not from the future haha

 

[mdb_talon]

Mislabeled the dates, I'm not from the future haha

Sounds a lot like something someone secretly from the future would say.

 

[BurtMacklin]

*cough* buy bitcoin *cough*

 

[meermann]

Update: I treated this and another new SPS frag with ampicillin q24 for 2 days. The other frag has crazy good PE now and this one hasn't lost any more tissue. I was going to frag it before that treatment, but now that the tissue isn't regressing anymore might it grow back over the old skeleton? This one hasn't shown any PE and hasn't had any color return yet (I know this can take a long time).

How does it look now? Has it got PE back?