SPS turning white.

JDigital · #1 10-03-2008, 05:28 PM

No polyp extension... I haven't had PE since bringing it home actually..

I will run a few test kits, but things should be in line, water change was done on monday (remember this is a 20G nano)... I change it every week 10-15% with Aquamedic Salt.I've got a birdsnest in the same tank, and it is growing like a weed. And a 3 0.5" SPS frags that are holding their color. No PE tho.

Lighting is 175MH... Tank does get a bit warm in the day.. 29-30.. drops to 27 at night w/ a heater. Planning to add fans shortly..

couple pics.

OCDP · #2 10-03-2008, 05:33 PM

N/M . SPS Experts to the resscuueeee

Did you recently change lighting on this tank?

christyf5 · #3 10-03-2008, 05:39 PM

Thats tissue necrosis, you can see it more clearly in the second shot. Not much you can do really other than either watch it closely or try to frag it and perhaps crazy glue the affected bits at the bottom to try to seal the tissue. It sort of looks like the tissue is thinning at bit at the top of the colony as well as the tips look like they've got some algae on them perhaps due to rubbing the sides of the transport bag or something.

Is it a new addition? You've had it awhile? It does look a bit "rough".

I'd put it down as low as you can in the tank in some medium flow area. Hopefully it will recover.

Good luck

Jason McK · #4 10-03-2008, 05:35 PM

that is a clasic RTN. I would frag what you can and move it to the opposite end of the tank.

J

Delphinus · #5 10-03-2008, 05:39 PM

Yeah, have to say it doesn't look good. Sorry. You can try fragging it as suggested.

Pretty much though for me once they get to that point they are as good as already gone. Your mileage may vary though, good luck.

JDigital · #6 10-03-2008, 05:54 PM

Damn... Thanks guys..

It's not really a new addition, and the MH has been on the tank for awhile now.. Perhaps the photo period is too long too..

I'll try moving it to the bottom... See how it goes for a week.

Chowder · #7 10-03-2008, 08:57 PM

You can try that but it also can be water quality or stability. In my tank I am battling Alk swings. I loose a piece about once every two weeks. Starts the same way as yours. Ive have stopped a few pieces from fully dieing but don't know what I did other then get the Alk back to around 9 DKH. The best thing you can do for SPS is keep your water as stable as you can.

Chris

JDigital · #8 10-03-2008, 09:12 PM

I think its toast... i went out for a couple hours, and came home to see half the colony has gone completely white...

fencer · #9 10-03-2008, 09:12 PM

That is STN...RTN is much faster(minutes to hours). I have a piece that did that slowly. In fact I tried to frag it and move to another tank. Still went on me. This coral was was probably streessed/infected with something. This STN was random...didn't happen to nearby corals. I have only seen one case of bleaching. The difference is that you can actually see poylps.

untamed · #10 10-04-2008, 05:23 AM

That's too bad. If you ever see this again, it requires painful, immediate intervention. As others have said, frag mercilessly. You want to remove pieces that are completely away from the dying area. Usually, I'll dip the frags in an iodine before mounting them somewhere else.

I have also experienced that one coral dying in this way, can lead to a catastrophic, massive die off of every coral. I have a theory about this, which I won't get into, but dead/dying pieces should be removed from the system as soon as you see it.