Good or bad type of slug thing????

Hi im not exactly a newbie, my tank has been up and running for over 7 months now (does that make me still a newbie?)

Anyway i noticed a little spikey slug like creature the other night and have now just noticed about 6 of the little critters on my zooanthid coral!

I looked them up and think they are called tritonia? and are a kind of nudibranch?
Are these safe or should i get rid of them??

Im actually not entierly sure thats what they are!!??

Anyone got any ideas?

Also i have 2 finger corals that have been closed for 2 days now all my params are fine, i noticed a kind of smoke (sounds weird) coming from one of them, do corals spore????

Any help/advice much appreciated!

many thanks,

col

 

some nudis absolutely love zoas , if in doubt , id isolate them first to get a positive id. but by the sound, they could be trouble. pic possibly could help, but theres so many nudis out there.

 

Is there any way to get rid of nudis?

I sure dont want my corals to die because of this!

 

Does it look like the animal here that is next to a penny? http://www.3reef.com/forums/id/common-ids-43555.html#post452167

 

Getting a photo is gonna be a problem as they are so small and camera wont focus, they are about 4mm long, some are a kind of yellow/orange, and the others look kinda green/brown!

help help help what should i do!!

 

Look up at Curts post and see if that is your nudi...

 

Yes exactly like that and i think that answers my question, they are zooanthid eating nudis, ok so anyone know how to get rid?

 

I sucked 9 of these off my zooanthus coral with a dropper (like a small turkey baster)
dont know if there are any more but i will keep an eye out and remove any if i see them!!!!

 

if there is one there are always more. Good luck with catching them all. You will eventually.

 

You'll want to do a Lugol's Solution dip to kill the nudi's. Use some RO/DI water, buffer it to a pH similar to the tank. Add the Lugol's Solution and dip for 5 to 10 minutes. If there are eggs, you'll have to repeat this after the eggs have hatched. If you don't have Lugol's Solution, you can use a Praziquantel medicine (I like Hikari Prazi Pro). If you don't have that, you can use Malachite Green.