who eat's these?

[manger]

Who eat's these. They are small colonial brown duster worms that live in calcerous tubes. they are kind of pretty but I think they have begun to grow out of control. They place a high calcium demand on my tank so it is hard to keep even Ca levels. I also think they may be stinging corals. i would like to limit their growth and spreading or eliminate them entirely. would blast them, but too many and in odd places.

 

[manger]

they are not apstasia, though are the same color.

 

[manger]

manual removal is very difficult. when i try, the worm receeds into its tube, when i rip off tube it cracks and thousands of little bits fly into the tank, and it seems this aids in their reproduction.

 

[manger]

could do, but some are growing on corallums so this would be a temporary fix.

 

[007]

those are not worms at all actaully, they are hydroids. This is one of the developmental stages of jelly fish. And unfortunatley they are very tough to get rid of. I have them in my tank and havent had any problems yet. Some limpets apparently eat them but none that I have in my tank.
If you try to use a toothbrush, make sure you have a syphon attached to it as they spread in the same fasion as aptaisa. Any little piece can start a new colony.

 

[reefnut]

I have them too...

.
A pteraeolidia ianthina (Nudibranch) will eat them. http://www.seaslugforum.net/pteriant.htm but I have not found anywhere to buy them??
I've also been told the keyhole limpet will eat them but again... don't know where to buy them at.

 

[jmesmcm]

If the rock is easy to take out remove the rock and grind them off. I used a makita grinder with a flex wheel on it to remove them and then put the rock back in the tank. No I have no more hydroids and the coraline has overgrown where I ground them off so you cannot even tell they were ever there.