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Old 01-19-2011, 06:07 PM   #1
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SPS turned white

I have a piece of brown birds nest that in 2 days has turned completely white. What do you think it could be?

PH-8.0
CAL-495
Alk-15DKH
Nitrate-0
Salinity-1.025
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Old 01-19-2011, 06:14 PM   #2
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Could be RTN (Rapid Tissue Necrosis). I'm no expert on it, so probably best you google it. I've had this happen to a few of my SPS as well.
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Old 01-19-2011, 09:34 PM   #3
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Was this piece new to your tank? If it was new, improper light acclimation comes to mind.
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Old 01-19-2011, 10:11 PM   #4
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My guess would be your alk is way too high if it's really 15 dKH. 7-11 dKH is where is should be.
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Old 01-19-2011, 11:20 PM   #5
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whats a good way to lower ALK? yes new to my tank. think its alk related too
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Old 01-19-2011, 11:27 PM   #6
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Quote:
Originally Posted by ccCapt View Post
My guess would be your alk is way too high if it's really 15 dKH. 7-11 dKH is where is should be.
Reef Aquarium Water Parameters by Randy Holmes-Farley - Reefkeeping.com
or too low. everyone readily adds calcium without tending to the alk. not saying you did this, but that would be my first thought.

that said i grew a birdsnest from a 1.5" frag to a softball sized colony and fragged it multiple times. ones day i cut a small piece off of it for a friend and put it back where i got it without removing it from the water. the next day it was completely dead.
i didn't change any parameters in my system, so i attribute it to what was residing on my hands at the time.

pics-
original frag-


colony at it's best-


the day after fragging-
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Old 01-20-2011, 09:50 AM   #7
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Wow that is crazy. Maybe it was something on my hands. I did handle it a couple times to get it placed right
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