Reef Builders - The Source for Reef Keeping Information

ozzy_200769 · #1 (**permalink**) 04-28-2008, 07:20 PM

Been doing this for awhile and never seen these before, I bought a tank from some one
and have 3 of these on different pieces of rock
Feels like stiff grass, dont retract when disturbed but do have little feather duster feathers come out of the tubes.
What are they, are they bad or what?
Thanks

NOSAJ214 · #2 (**permalink**) 04-28-2008, 09:38 PM

I cant really tell from the pictures,but looks like some kind of algae or plant.

spanko · #3 (**permalink**) 04-29-2008, 07:57 AM

I am thinking some kind or hydroid.

jimw369 · #4 (**permalink**) 04-29-2008, 10:33 AM

I think Majano. Majano=bad.... When in doubt, pull it out!

adam jenkins · #5 (**permalink**) 04-29-2008, 11:56 AM

I agree with Jim,looks like majano.

spanko · #6 (**permalink**) 04-29-2008, 12:06 PM

I would go with you guys except for his statement "do have little feather duster feathers come out of the tubes". If you blow up one of his pics, you can actually see the feather duster like ends on some of the. I have not seen a majano that has that feature before.

jimw369 · #7 (**permalink**) 04-29-2008, 08:34 PM

Quote:

Originally Posted by spanko

I would go with you guys except for his statement "do have little feather duster feathers come out of the tubes". If you blow up one of his pics, you can actually see the feather duster like ends on some of the. I have not seen a majano that has that feature before.

YES! I see them now after blowing up the pic. Ummmm.....dunno. I am going to ask an expert later tonight and report back! IMO if no one here can give it a positive ID that critter would get flushed!

Good catch spanko!

ozzy_200769 · #8 (**permalink**) 04-30-2008, 09:29 PM

I will try to cut them off it I can't get an ID
Thanks

spanko · #9 (**permalink**) 04-30-2008, 09:37 PM

Wow, up to you of course but I would let it be for a while and see what develops. If it is colonial hydroids may just go away with time. These things wax and wane according to the nutrient level in our tanks.

JMO

Phayes · #10 (**permalink**) 05-03-2008, 07:12 PM

Those are indeed hydroids, have had them on frags of coral I have bought from a certain LFS. They quickly spread across the LR and onto the substrate.... He ended up restarting that tank from scratch... Luckily, the bit that came on my frags (they were 5 dollars, couldnt pass it up), has not spread at all, maybe a little growth but thats about it. I'm sure proper water params have something to do with it. Just keep an eye on it... if it starts to grow, pull the rock out and nuke it.

jimw369 · #11 (**permalink**) 05-03-2008, 07:57 PM

Im sorry I forgot to post back but +1 for chad and spanko. Hydroids that are in the larvae stage before they become free floating. +1 for chads prognosis! Nuke the suckers!

And be careful doing it!