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Old 06-13-2006, 12:04 AM
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So anyone care to explain how to avoid RTN?

Thought I was doing really good, my dozen or so frags were starting to colour up again, and were looking good. 3 of nicer milli's were growing noticeably each week...

Then @ lights on this morning, those 3 millis were pure white. Didn't seem to effect the others..

Why would all the millis (save one - of course it wasn't anything overly nice even before it hit the tank) have RTN'd? Nothing changed, nothing dosed.

Andy
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Old 06-13-2006, 12:11 AM
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Andy, I hear ya man. SPS can be such a pain in the arse. I have had several (nice) frags and colonies RTN on me overnight. I hadn't changed anything nor added anything. I really don't know the cause, but it has to be some kind of change in water chemistry or something... either that or it's just a mystery
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Old 06-13-2006, 03:33 PM
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I think thats the million dollar question Its the wierdest thing how random it all is, yet so selective sometimes (ie. just millis in your case). Sometimes I think SPS will RTN if you look at them funny.
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Old 06-13-2006, 03:38 PM
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what does RTN mean?

Sorry to hi-jack....
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Old 06-13-2006, 03:41 PM
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Rapid Tissue Necrosis. The tissue pretty much just melts or dissolves off of the coral in a matter of hours, leaving a white skeleton behind. Sometimes it can be due to water quality, temperature or lighting, other times its just random and nobody can figure it out.
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Old 06-13-2006, 03:53 PM
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And the problem is that it can happen so fast that it doesn't even give you time to figure out why it happens. I've lost many randomly chosen frags to RTN, thankfully no colonies though.
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