Stn/Ntn causes

[Duffer]

So I have read that this most times is caused by alk swings..I have no alk swings,have a doser and has been consistent at 8.2
Other parameters cal 425
Mag at 1350
Nitrate at 5
Phos at .043
Salinity at 1.26

What is everyone’s thoughts what causes rtn/stn

 

[jsc]

Watch this. Extremely informative

 

[Duffer]

Nice videos, thanks for that.

 

[Charlie’s Frags]

So I have read that this most times is caused by alk swings..I have no alk swings,have a doser and has been consistent at 8.2
Other parameters cal 425
Mag at 1350
Nitrate at 5
Phos at .043
Salinity at 1.26

What is everyone’s thoughts what causes rtn/stn

Are you experiencing stn/rtn??

 

[Duffer]

Yes in a few corals, I think I’m leaning towards stress on corals as it makes some since...also I had 2 corals ship and I did not acclimate them which I was a dumb butt for not doing. Lesson learned

 

[Charlie’s Frags]

Yes in a few corals, I think I’m leaning towards stress on corals as it makes some since...also I had 2 corals ship and I did not acclimate them which I was a dumb butt for not doing. Lesson learned

I never acclimate mine and my alk has never been “stable”. The only time I experienced stn or rtn was from using gfo and or carbon dosing. Are you using either of these methods.

 

[Charlie’s Frags]

Vermatid snails or other pests can cause stress which will lead to stn or rtn as well.

 

[Duffer]

I never acclimate mine and my alk has never been “stable”. The only time I experienced stn or rtn was from using gfo and or carbon dosing. Are you using either of these methods.

Neither, but thanks for asking..
No vermatid snails either

 

[EMeyer]

The only evidence in the scientific literature supports the conclusion that RTN/STN is bacterial.

Some in the hobby prefer a ciliate explanation, for which I have not yet seen any published reports.

Certainly alk swings (or salinity swings) can contribute but we've all seen RTN/STN without any swings, like your case. Like many, I've saved some RTN frags with antibiotic dips and by fragging healthy parts from a dying colony.

 

[Charlie’s Frags]

The only evidence in the scientific literature supports the conclusion that RTN/STN is bacterial.

Some in the hobby prefer a ciliate explanation, for which I have not yet seen any published reports.

Certainly alk swings (or salinity swings) can contribute but we've all seen RTN/STN without any swings, like your case. Like many, I've saved some RTN frags with antibiotic dips and by fragging healthy parts from a dying colony.

Can you elaborate on your antibiotic dip method?

 

[Daniel@R2R Verified Admin]

I've never really thought of STN/RTN as having a specific cause, but more as the result of any number of factors leading to coral death. These could include parameter swings or anything else that causes coral stress. I'm certainly not an expert, but from what I've seen, this makes more sense than viewing it as a specific disease.

I'll follow this discussion to see what I can learn.

 

[Duffer]

The only evidence in the scientific literature supports the conclusion that RTN/STN is bacterial.

Some in the hobby prefer a ciliate explanation, for which I have not yet seen any published reports.

Certainly alk swings (or salinity swings) can contribute but we've all seen RTN/STN without any swings, like your case. Like many, I've saved some RTN frags with antibiotic dips and by fragging healthy parts from a dying colony.

@EMeyer
Antibiotic dips, can you tell us a little more about this

 

[ScottB]

My big takeaway on Abe's video that I think is so often overlooked is the time lag between stressor event and the actual demise of the animal. Makes it difficult sometimes to figure out what happened.