Problem with green Birdsnest coral

J

Julian.Rad17

New member
The problem I have is with a birdsnest coral frag I bought about 3 weeks ago. Right after I acclimated it, I put it about mid way in the tank and noticed a white patch on the side with no polyps or skin. Since it was not spreading I assumed the tissue would grow back. The frag did great with lots polyp extension for the first 10 or so days. The color hasn't really been green but other than that it looked fine.

About 7 days ago I started to notice small white areas on the frag in random places like the middle and base. The skin on the frag seemed to just be peeling away. The polyp extension hasn't been as good as before and some of the them are darker colored and shrunken. I did dose amino acids a few days ago and I also fed reef roids. The frag is currently at the bottom of the tank near the sand. The bleaching has only gotten worse and seems to spread at night.

I was just wondering if anyone knows what this tissue die off is caused by and if it can be reversed. I did a 20% water change yesterday. Here are some of my parameters.

Nitrates- 0
Phosphates- 0
Calcium- 420
dkh- 9
 
I would recommend posting tank size, lighting, where the coral is in the tank, and how long the tank has been setup. I am probably forgetting some other important details.
 
Red Sea reefer 28 gallon. AI Prime LED. Again, the frag is currently at the bottom of the tank near the sand. Tank had been setup for over 3 months.
 
Do you have a yellow clown goby? I do, and I USED to have a green slimer. Little sucker wreaked havoc on that thing.
 
My birdnest had the same issue before. After thorough investigation i found out some white nudi, small enough to be hardly seen at glance. They are feasting on my birdnest colony, almost killing all of them. Took the colony out, frag remaining good branch and dump the rest into dustbin.
 
See the little mountains image in the reply box? If it is hosted on a site, you can add the URL for the actual picture to do it that way. Otherwise, go advanced and click the paper clip. There you can upload directly from your computer.
 
Following. I lost a birdnest to bleaching and never really figured out why. I had read that it could be bleaching due to too much light, or not enough. I did not know what to do with that.
 
How the flow in the tank? They like lots of light (slowly acclimated to it) and medium to high indirect flow. Do you have any powerheads in the tank?
 
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