Something is eating on the stem of my Euphyllia

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Hi Hennie/anyone else out there...
it looks like something is eating on my
Euphyllia coral's stem, as there are a "hole" forming on two parts on the stem of the coral.
The head looks fine - it's just on the hard part of the stem.
i've noted some bristle worms on the coral (one or two), but I doubt that they are the son's of a guns that I'm looking for.

I'll take a photo tomorrow.
Any advice/ideas?

 
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Have you had a look with a torch about 2 hours after lights out?
 
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Hi Raven have you tested your calcium levels? Mine did the same when my calcium was below 400, the calcium skeleton started dissolving like this, but stopped once I got the levels to about 420 again.
 
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Hi Raven have you tested your calcium levels? Mine did the same when my calcium was below 400, the calcium skeleton started dissolving like this, but stopped once I got the levels to about 420 again.
off to test my Calcium levels...
 
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Ca is 452....
But I will have to test my Alk and PH just to make sure the readings are correct...
 
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Do you perhaps have any Hermits? Could be that there is some algae growing on the skeleton and that the Hermits are damaging the skeleton while grazing on the algae...
 
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My tank's calcium level very rarely exceeds 380ppm, so I don't think this is the problem...

I'll take a photo tomorrow.
Yup, post pics - it will help. Also, do observe the tank after dark, using a red light if possible. If something is eating the coral you might just be lucky enough to catch a glimpse of it...

Hennie
 
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It's that black slug lol i told you to take him out!
I do have some slug like creatures running around in my tank....Starting to suspect them..But they were in my tank for a very long time now.
So why only start eating my corals now?
 
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Can a slug eat thru the hard stem like this..?
What about bristle worms...can they be the bastards causing this?
My lights are off for + 30 min now - will do hourly inspections tonight to see if i can catch the culprits...
 
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That's probably a fish, urchin or snail having a calcium snack. If you do have any urchins, that would be my first suspect...

Hennie
 
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urchin- not that I know of..
Can my sailfin tang be the culprit?
other fish in my tank:
1. Chromis
2. Yellow tail damsel
3. Fox face
4. bangia cardinal
5. clowns
6. fire gobie
7. cleaner shrimp
8. all that i can think of now...
 
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I didn't add any new LR for in the last year or so.
this coral is in my tank for the last 6 months or so.....Only now that this happens.
 
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I have never seen anything like that before! Something must be eating it after dark!
 
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Ok - I was up a couple of times last night. (I was doing the toilet drill in any case)
i've noted one of those "round" star fish (you see them in the rock pools under the rocks) on the coral. It was there from +- 21:00 hours - till 05:00 when I decided to remove him.
It was staying on one spot the entire time. The coral was not damaged, but the area looked "clean"...
Unfortunitly I dropped the little bugger in the tank again (by accident).

I've also noted little worms in the "eaten" parts of the corals. They are very small red worms - it might be bristle worms - but I can't say for sure. And they are too small and to far to take a photo of them.

So - Should I frag this coral - and take the "bad" parts out?
Or should i leave it in?

None of the other Euphyllia have this. I still have a bunch of pieces of Euphyllia left that Hennie brought thru (the ones that some of you never collected!) -and all seems fine! It is just the one (and sadly it's the biggest on longest in my tank with the most heads.:()

PLEASE HELP!!!!!!
 
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TAKE IT OUT AND GIVE IT A IODINE DIP,just in case it is a bacterial infection.but do those worms look like nudis?
 
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IODINE DIP - I'm a bit on the sceptic side about this - no they rather look like bristle worms..
 

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