zoanthids dying

[kostasv]

my zoanthids go from bad to worst. they dont open and dye. i inspect the rocks with the zoas but nothing strange found. do you have any idea?

 

[A. Grandis]

You'll need to post all the info you can.
It's just impossible to guess only by the picture.
If you can take another picture of them in the tank would be great.

An infection could be taking place.

Those spots look like zoa pox to me!!
I would try the treatment for zoa pox in the first place.

http://www.coralpedia.com/articles004.php

Good luck!

Grandis.

 

[kostasv]

thank you very much. i think that the problem maybe "carbon & agressive skimming" as refered to the link you gave me, becouse
1. i use vodka
2. i changed light to led (more intense)
3. small zoanthids dyed
4. larger palys (photo) still alive
5. echinophyllia started to bleach (from red to white)

so except from using furan 2 i have to
1.reduse vodka and add special blend bacteria
2. reduse light

any ideas?

 

[seamonkey84]

LEDs maybe too strong, ime smaller zoanthids prefer shade. if it's infection just on that piece, I do a peroxide dip (50/50 mix with tank water) for 5 mins, that has cured my zoanthids and acans of bacterial and fungal infections, oh and problem algae. I don't know about the zoa pox

 

[A. Grandis]

thank you very much. i think that the problem maybe "carbon & agressive skimming" as refered to the link you gave me, becouse
1. i use vodka
2. i changed light to led (more intense)
3. small zoanthids dyed
4. larger palys (photo) still alive
5. echinophyllia started to bleach (from red to white)

so except from using furan 2 i have to
1.reduse vodka and add special blend bacteria
2. reduse light

any ideas?

Wow!! So many things...
You are very confused!

The zoa pox has nothing to do with the vodka dosing.
I don't think zoa pox has nothing to do with skimming nor lights (bleaching) either. The article only say that, but doesn't state as a fact.

The article suggests that the use of activated carbon (as "Carbon", in the article) and the use of a powerful skimmer (as "Aggressive Skimming", in the article) would somehow contribute to the decline of zoanthids in closed systems due to the removal of some of the "yellowing compounds". Such removal would sometimes drive corals and zoanthids to bleach.
Maybe the article suggests bleaching and nutrient removal to be two things that would cause or allow zoa pox to happen, due to some weakness of the polyps (?).

I'm sorry, but I don't think that is always true because many other people reported zoa pox without any bleaching nor sudden changes in their systems.

Also, many people have experienced bleaching keeping their systems with a powerful skimmer and carbon 24/7, without any zoa pox.

The fact that the small polyps are dying and the bigger polyps are still alive could have nothing to to with the zoa pox too. Then you have more than one problem at once.

Could be that the problem of the sudden change of the lights affected the small polyps, but at the same time, the zoa pox was introduced in the system and attacked the bigger polyps. Or maybe the small polyps had zoa pox first?

If you really have zoa pox you need to treat now and cut back on the new lights, if you think there is a bleaching going on.

I'm not a fan of vodka. There are many people that loves to dose it and say their tank really need that, but I never had to dose and prefer not to. It's a dangerous thing to play with bacteria population IMO.
No, I wouldn't dose vodka nor add any " special blend bacteria". Just me!

Grandis.

 

[goldenfiji]

How is your I2 level? Zoas and polyps need it.