Sps Touching RTN?

Heabel7

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I had 2 decent size colonies 7+” across of garf bonsai and a no name tenuis touching each other for a couple months. Generally if my sps touch and one or both appear to be hurting one another I clip and separate. However in this case they seemed to be equally matched and growing around one another. Then suddenly I had a large 1” death on each. I immediately broke off all of it. Over the next 3 days both completely RTN. Even the frags I tried to save from RTN.

is this normal? and should I be more proactive in the future?
 
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ChaosAquaculture

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I've had this happen as well and can't give you a good reason for it. I just changed my behavior to get ahead of it before it occurs. Would love to hear a definitive reason why they can tolerate each other for months and then all of a sudden go belly-up.
 

ScottB

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Hmm. I have stuff get knocked up against each other all the time in my frag system and one or both get a burn. But RTN events I usually place to something more systemic. Even systemic "things" can affect some acropora, while others swim right through. GARF in my experience is a canary for sure. I try to keep 2 pieces around, one for each system.
 
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Heabel7

Heabel7

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Hmm. I have stuff get knocked up against each other all the time in my frag system and one or both get a burn. But RTN events I usually place to something more systemic. Even systemic "things" can affect some acropora, while others swim right through. GARF in my experience is a canary for sure. I try to keep 2 pieces around, one for each system.
I measured my parameters and had low magnesium. 1200 and poking around this afternoon my acro tips seem a bit porous. Does that correlate? Low mag and weak skeletal system
 

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