Possible leather infection? Help

medic29

Premium Member
Good morning.

I've got a mystery I need some help with. I've had 2 separate soft corals suffer the same fait that the cause is a mystery currently and I need some help solving it.

It didn't happen to them at the same time either. It happened to one. Then a couple of months later, the other suffered the same, or at least a very similar problem. I'll post some pics showing what happened.

Below are a couple of pics of when my colt coral was doing really well.
colt1.jpg

colt2.jpg


Then here is a couple of pics showing what it looked like a couple of months later. Now to be specific, it looked like normal, then within about a day it looked like this:
colt3.jpg

colt4.jpg


Yesterday I noticed my nepthelia (sp?) had suffered from the same affliction.

Here is is a couple of months ago:
nepth1.jpg

nepth2.jpg


I had been noticing that it was really happy and extending its polyps and looking really good lately. I was really happy with how it was doing.

Then yesterday I noted it had basically died; under the recommendation of a friend at my LFS I removed it immediately from the system. This is what it looked like after removing it from the system:
nepth3.jpg

nepth4.jpg


It has been suggested this may be a bacterial infection. Both of these corals were sitting down in contact with the sandbed. My other leather and soft corals which are up on the live rock all look good, but all my other soft corals looked good a couple of months ago when my colt coral was affected.

At that time a friend suggested I bring the colt over to his system in case it was something in my system that was attacking it. It continued to decline in his system until he finally pulled it. He told me one of his soft corals (a leather) has suffered a similar problem.

This continues to make a good argument that it could be some sort of infection that affects soft corals.

Does anyone have any suggestions? Any ideas? I've been considering pulling all of the leathers from the tank and putting them in a separate tank by themselves. Could this be some bacteria or something in the sandbed that is affecting these corals? I will be setting up a new larger display tank here soon and was going to bring all of the live sand and live rock from my current display tank and put them in the new display tank, now I'm wondering if this is going to be a good idea or even possible. I don't want to bring some type of infection into the new tank.

Again, I'm open to any ideas??

Thanks!!
 
Sorry, I probably should have put that in the post as well.

pH 8.28
Nitrate 0
Nitrite 0
Ammonia 0
Ca+ 440
Alk 9.3
Phos 0
Mg 1290
Sp Gr 1.025
 
I have never experienced any type of bacterial problem, but sometimes my softies seem to be melting if they are too close to my moon brain or other lps with long sweeper tentacles.

Are they near any lps?
 
your water may be a bit too clean to keep softies happy for long. in general, they like some dissolved organics and nitrates. also certain softies like xenia like a bit of phosphates, im not sure, but these guys may also. another thing to consider, if it is only the softies on the sandbed affected, the sand may be too abrasive and causing nicks and scratches in the tissue that are getting infected or you have something in the sandbed that is getting hungry and deciding to feed on whatever it can. any funny lookin bristleworms near the corals in question before their decline?
 
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