help needed, me acans are shrinking and dying

[nimrods]

i have them for sevral monthes they were open , my other SPS and LPS are fine.
my parameters are nice (Kh-8, Cal - 400, Mg - 1360, Phos- 0.09 nitrate - 0)

need help quickly thanks

 

[All Delight]

maybe some kind of bacterial infection. I would try dipping in tropic marine pro coral cure.

 

[Skiboat]

Mine are doing the same... following..

 

[Kworker]

I have one frag doing the same, I relocated it away from the other frags. I had it happen before and it made a comeback.

All my others are growing nicely so I am not concerned. Do you feed yours?

 

[Skiboat]

I don't feed, but they were close to other frags..

 

[reef lover]

just a thought, but i would get those asternias off from them, not all eat corals but not all are safe and feeding is essential

 

[Tahoe61]

just a thought, but i would get those asternias off from them, not all eat corals but not all are safe and feeding is essential

Good eye. If you find multiple Asterina on your corals possibilities are good they are eating them.

 

[Pete polyp]

I have found that asterina will find a dying coral and start munching away. They seem to find them pretty fast. If they are on the dead and dying parts then that's probably what's going on. If they're all over the healthy polyps then they're probably eating the healthy polyps.

 

[dougers31]

It is possible that you have a coral eating worm in your tank... just sayin.

 

[Tahoe61]

I find it odd that the Blasto right next to the Acans is fine.

 

[rossco]

I had that happen a couple of years ago. Polyps were out and feeding, next day were one-third gone, would still eat, a day or 2 later the polyp would be gone. That would repeat until the colony was gone. I figured it must be something eating them, maybe even living on, in, or under. I tried all the standard dips, revive, iodine types.

In desperation I made a dip of interceptor (it was still available ) and put an affected colony in it. Then I forgot and went to bed. The next morning there it was all expanded with feeders out in the dip container. I put it back in the display and it fully recovered. Later the same thing started happening to other acans, I did a whole tank treatment once a week for either 2 or 3 times and everything recovered.

Now I dip every new acan, scoly, chalice and other LPS for 2 or 3 hours in interceptor, and have not had a recurrence.

Nothing scientific but it worked for me.

 

[Tab28]

Funny i came home yesterday to find one acan with looked like a laser beam was just on it. A swatch of heads were clean or cut as if it went straight across. I removed the colony. And saw what looked like common bristle worms. Along the bottom in cracks. I dipped it. About 5 came out of the holes. Not sure if it s bristle worms gone rouge or something else. But it was eaten by something. Too clean of a strip to be a fish. They were eating before the dip. Even the portions that were cut had feeders out before dip. Hopefully that was my issue, it may be your's as well.

 

[ultimatemj]

Following along, as I've had a few things recently show stress (necrosis or chomped?!) like this...and the worm activity is suspicuous.
Bristles are supposed to be safe, only eating decayed materials....but maybe there are different kinds?

 

[rossco]

I have had bristles come out from under the colony to poach mysis that I was target feeding, never noticed any actually feeding on the acans. Not seeing many bristles since I have been keeping a Melanurus Wrasse. I have had eunicid worms cause some trouble before.

 

[nimrods]

i will make deep for them. i think also white urchin can cause this.
i have one like several years but it ok. i brought another one (same species) and it hang around the acans area.
i will take it out for a while also.