Acro Disease help?

[Maxx]

I'm having some issues with my 58 gallon SPS/clam tank.
One of the corals is an unknown table type of acro and has some bacterial infection of some sort I'm guessing. The area affected has turned pink and tissue has receded. It looks nasty.
I have ablsolutely no idea what I can do to save this guy short of fragging it and tossing away the affected area. The upper area of the acro is completely unaffected and looks happy.

Tank parameters

Temp 79-81 F controlled by chiller
Salinty 1.027 via refractometer
pH currently @ 8.24 via American Marine ph Monitor. Will occassionally vary between 8.1-8.4 (Nighttime and Kalk being dosed)
Calcium 380 via Salifert test kit.
Alk 9.6 via Salifert

All my other test kits are manufactured by Seatest and are not precise enough to determine if Ammonia, Nitrate, or Nitrite are present at lower levels. However, other corals, 3 clams and 3 BTA anemones are not behaving as if stressed.

Nick

 

[Maxx]

I also have a green slimer that behaving strangely.
The slimer is turning from green to brown, (see top down pics) and actually looks burned brown, like its been scorched or something on some of the tips. It also has tissue that is missing in areas that are sorta shaded from the MH's, (See sideshot).

I'm thinking that the tissue is being removed by some sort of parasite, but dont know what would be so specific as to only go for the slimer? Any thoughts?

 

[kevinpo]

Hello,
regarding the table coral: if is possible to remove it from the tank you can apply superglue over the affected area. This will seal it and hopefully prevent the spread.

The A. yongei looks to be bleaching from some type of stress. The tissue that has receded doesn't look to be the work of parasites IMO.

I would perform a 30% water change and check the calcium and alkalinity afterwards. The calcium/alkalinity would be in better balance at 400ppm for calcium and 8.0 dKH for alkalinity. Also if you have a magnesium test kit I would test that too. I shoot for 1285 ppm for magnesium. Both of the corals like high alternating water flow and moderate light.

HTH,
Kevin

 

[Maxx]

Thanks Kevin!
I just got back from work and checked everybody out....the slimer is starting to expand its polyps more than it has in the past week, so I took that as a good sign.

I did just recently remove a Coral Beauty from the tank that was nipping at the corals, did a 23 gallon water change, (almost 30% in a 75 gallon system) and started running carbon in a Magnum HOT filter...

So you think superglue would take care of this? Fragging should not be necessary?

Nick

 

[NaH2O]

Nick - the pink areas do look like they have spread on the table.

regarding the table coral: if is possible to remove it from the tank you can apply superglue over the affected area. This will seal it and hopefully prevent the spread.

Kevin - is this a bacterial infection? Can something like this spread to neighboring corals, or is it more likely due to an injury of some kind?

 

[kevinpo]

Nikki,
The pink area appears to me to be where the tissue has died and then bacteria settles on it to clean it up. Not bacteria attacking healthy tissue.

Nick,
Superglue is very effective in stopping the spread of tissue loss due to damage on SPS corals.

Regards,
Kevin

 

[NaH2O]

Nikki,
The pink area appears to me to be where the tissue has died and then bacteria settles on it to clean it up. Not bacteria attacking healthy tissue.

Thanks Kevin!!