Hydroids

[Jon Lazar]

hydroids

hydroids

How about covering them with a blob of two-part underwater epoxy?

 

[djultra]

These are the ones I have

They also look like

Seaweed Bryozoan - Caulibugula dendrograpta
Class: Bryozoans
Gymnolaemata
Order: Cheilostomata

I have had not luck removing them.
You scrub them off they just spread

 

[captbunzo]

If you are talking about the green things, those are green star polyps. NOT the same *** hydroids. They will spread and sting other things, though...

 

[djultra]

Not the star polyps, here is a closer shot

 

[captbunzo]

Nice shot of them...

 

[aquaforlife]

Holy crap... those are hydroids? I've been watching that stuff take hold here and there in the 240gal display tank at the LFS I work at for months... now I finally know what it is! thanks djultra.

Jared

 

[djultra]

That is what they have been called on other forums. All I know is once they take control of your tank they are hard to get rid of.

 

[marcusbigdady]

did anyone have luck ridding the take of these things.....

 

[Sullyman]

How about these brown weeds?

 

[Sullyman]

 

[reefnewbie54321]

keyhole limpets ... they will control hydroids.

 

[marcusbigdady]

your joking about the keyhole limpets!aren't you

 

[Eve]

<a href=showthread.php?s=&postid=7790979#post7790979 target=_blank>Originally posted</a> by marcusbigdady
did anyone have luck ridding the take of these things.....

This is what most of my rocks in the left 1/3 of my tank looked like before I decided that I just couldn't ignore it anymore - that it really would continue to spread and take over the entire tank. I finally bit the bullet, tore down that part of the tank and removed the rocks the hydroids were on - which was a LOT of rock. There were some places where I couldn't remove the rock (a little sprig of hydroids on a rock at the bottom of a large pile/formation). Those I covered with a piece of pond liner held down by a rock. If you cut off the light for a couple of weeks they will die but that's not a practical solution for an entire tank.

In my research there was a place that raised seahorse fry and their tanks were infested. They emptied the tanks and ran HOT water through them for a few days but even that didn't kill them all.

Every now and then I'll see a new sprig pop up, but I jump on it right away.

 

[reefnewbie54321]

<a href=showthread.php?s=&postid=7800136#post7800136 target=_blank>Originally posted</a> by marcusbigdady
your joking about the keyhole limpets!aren't you

Why would I be joking??? I had some hydroid issues in my seahorse tank and on a seahorse forum some one reccomended I try them. I added a dozen to a 20g tank with a huge hydriod problem and in a week it was cleared up and then I had a die off and only 4 limpets were left and still lived in the tank till it was torn down.

 

[captbunzo]

I am anxious yo try some limpets on my hydroids. They are at least worth a try...

 

[Eve]

Do you have a pic of the type of limpets that are supposed to work?

I have some in my tank - black fleshy and round (or oval) but they have what looks like a hard gray "cap" on top of them. I thought I read somewhere that some limpets feed on coraline algae? I really wouldn't care if they took out the hydroids, but it would be good to know if there are good and bad ones.

 

[captbunzo]

Bad? I think that is a bit of am overstatement. Feeding on coralline algae will probably help it to spread around your tank as the coralline is disturbed and released into the water column.

 

[reefnewbie54321]

This isnt where I bought mine ... I got them from another reefer for 40.00 a dozen.

http://www.liveaquaria.com/product/prod_Display.cfm?pCatId=1752

 

[Sullyman]

Can anyone ID the brown things in my pic?

 

[Eve]

<a href=showthread.php?s=&postid=7805023#post7805023 target=_blank>Originally posted</a> by captbunzo
Bad? I think that is a bit of am overstatement.

Could be

My question though (for anyone) - are there more than one kind of limpet and if so, are they reef safe?