STN on an acro at the base....

[mrkrispy]

...help! I have an acro that is somewhat new to my tank, about a month. I think I may have had the base of it blocked from flow, as it was starting to recede upwards. However, I also had a heater malfunction and the temp dropped from 78-80 to 70-72, probably for most of a day. None of my other acros seem to have a problem (although most of them browned out after the temp drop). I have moved the colony up to get some flow on the receding area, but can't tell if the STN has stopped yet. Any thoughts? I have an acro crab in the colony so I am not sure what to do...

 

[doody]

Whats this STN stuff I keep reading about?
I tried the search, but we all know how that works around here.

 

[bkztrini465]

STN- Slow Tissue Necrosis

It's when the tissue on the SPS is slowly dying off.

-Kris

 

[imbuggin]

look for

look for

look for acro flat worms. Blast the bottome with a turkey baster and pray you don't have them. That is how it starts.

 

[shelburn61]

I think a lot of acros recede at the base b/c it doesn't get as much flow as the rest of the coral. A temp drop could easily have further stressed the coral enough to trigger the recession.

 

[mrkrispy]

Hmmm I am hoping it isn't acro flatworms, I can't really take it out any let it dry out. I don't seen anything at all on the coral. Hopefully it was just the lack of flow/temp drop. Now that I have it back in some decent flow should the STN stop or do I need to do anything else? thanks so much for the help

 

[damienkee]

<a href=showthread.php?s=&postid=6295907#post6295907 target=_blank>Originally posted</a> by mrkrispy
Hmmm I am hoping it isn't acro flatworms, I can't really take it out any let it dry out. I don't seen anything at all on the coral. Hopefully it was just the lack of flow/temp drop. Now that I have it back in some decent flow should the STN stop or do I need to do anything else? thanks so much for the help

sorry for hijack!
but is tat means take the acro out and let it dry out can solve the flatworms problem.

 

[peecook]

test your alk too.

 

[mrkrispy]

I tested everything, from previous experience I thought the alkalinity had gotten too low, but it was fine. I can't tell if necrosis is still happening, it has only been in the better flow for a week or so.

 

[fishamajiggle]

i am having a similar problem with the stn. but mine isnt receding from the base it is little spots on the colony. close to were branches come out of the main trunk. do you think it is flatworms. my birdsnest dosent seem to be affected at all.

 

[mrkrispy]

hmmm i don't know but it sounds like poor flow.

 

[Dan Fagan]

<a href=showthread.php?s=&postid=6306096#post6306096 target=_blank>Originally posted</a> by fishamajiggle
i am having a similar problem with the stn. but mine isnt receding from the base it is little spots on the colony. close to were branches come out of the main trunk. do you think it is flatworms. my birdsnest dosent seem to be affected at all.

Sounds like FW's to me....check for the eggs....

 

[pwilk20]

<a href=showthread.php?s=&postid=6306096#post6306096 target=_blank>Originally posted</a> by fishamajiggle
i am having a similar problem with the stn. but mine isnt receding from the base it is little spots on the colony. close to were branches come out of the main trunk. do you think it is flatworms. my birdsnest dosent seem to be affected at all.

Like this?

http://img.photobucket.com/albums/v237/pwilk20/Picture519.jpg

I`ve got the same thing, very slow stn. I have placed the coral in better flow, not sure if it`s going to help.

Paul.

 

[mrkrispy]

that looks like my deal as well

 

[fishamajiggle]

<a h
Like this?

http://img.photobucket.com/albums/v237/pwilk20/Picture519.jpg

I`ve got the same thing, very slow stn. I have placed the coral in better flow, not sure if it`s going to help.

you seem to have it more at the base where mine is in the middle. ill try to place in better flow.see what happens.

 

[TA]

<a href=showthread.php?s=&postid=6325407#post6325407 target=_blank>Originally posted</a> by pwilk20
Like this?

http://img.photobucket.com/albums/v237/pwilk20/Picture519.jpg

I`ve got the same thing, very slow stn. I have placed the coral in better flow, not sure if it`s going to help.

Paul.

Experiencing base recession as well...exactly as in your pic. Not on all colonies, but some...including small frags (flow is not the cause). Acro tips still growing fine. Any updates? Have you solved the problem? I'm thinking its not AFWs...rather an imballance in the system one way or another (my approach for the moment...stability, increased water changes, wet skim, carbon, maybe a dip or two). Slow recession from the base upwards doesn't appear to look like PICS I've seen posted where AFWs were clearly identified as the problem source (random spotty tissue recession all along acro branches where the FWs have been feeding).

 

[Kent E]

When I had recession from the bottom up it was caused by red bugs, not Acro flat worms.

 

[TA]

<a href=showthread.php?s=&postid=6544049#post6544049 target=_blank>Originally posted</a> by Kent E
When I had recession from the bottom up it was caused by red bugs, not Acro flat worms.

Had RB...got rid of 'em couple months ago...long before any recession was observed.

I would guess that the symptom (ie., base recession) may be the result of any one of a number of reasons.

I've been trying to rule-out some of the more probable causes (such as RB, in your case) in an attempt to identify the particular cause in my tank (still havn't been able to eliminate AFWs as the cause, although the signs appear somewhat inconsistent with AFW-induced recession). Still think problems with tank chemistry is more likely the cause in my case (although typical measured parameters are stable and in their 'appropriate' range).

Was just curious if fishamajiggle identified the problem in his tank.

 

[PrangeWay]

STN Also

STN Also

I actually have a similiar problem with a ora blue tort. And when I mean STN, I emphasize the word 'slow', little less than a 1/2 inch over 3 months, but consistent none the less. It's still growing nicely, and the color is fantastic, it's perplexed me, I even added a 2nd tunze thinking it was flow...

I'm not sure if there are any other common problems to look for? I've already ruled out the simpler ones like flow, light, alk, calc, etc... There are also 3 wild caughts in the tank, and their all perfectly fine.


PW

 

[Sparkss]

<a href=showthread.php?s=&postid=6296147#post6296147 target=_blank>Originally posted</a> by damienkee
sorry for hijack!
but is tat means take the acro out and let it dry out can solve the flatworms problem.

No, there are other ways to combat the AEFWs rather then letting your acros dry out completely . What they were referring to was a way to make them more visible. When in the tank, they are basically invisible. When the coral is taken out of the tank and allowed to dry a bit then the FWs show up as shiny spots on the coral. Obviously letting the coral dry out for too long will kill it. I think I read no more than 10 minutes, or something around that time.

Another way that was reported was to use a short cold water dip, using saltwater (not fresh water). This causes the FWs to drop off the corals rather quickly.