What is it?

[gclackum]

It appears to be some sort of plant. Looks like a stalk with a single leaf at the top. They are about 3/8" tall. Does any one no what it is. Does anyone know if the yellow blob to the right of the the little growies could be Erythropodium aka encrusting gorgonians?</em>
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[slayer]

hey,,,, i have the same thing growing in my tank too...they grow in groups...i've had them for 2 years +...never seemed to harm anything..i was actually thinking about taking the rock they where on and removing them... any id on them would be great....

 

[darren24]

Hydroids?

 

[kevin]

Looks like some type of star/clove polyps

 

[jmaneyapanda]

Darren nailed it- hydriods.

 

[dakota]

Check here:

 

[george]

Yep. Hydroids. They look neat, but can grow to nuisance quantities. They can also sting corals and, given sufficient contact, irritate human skin as well.

Kill them while you can.

 

[vettesarebest]

I do not have these but, ill ask the question for him. How do you kill them? Same as aptasia? Lemon Juice?

 

[darren24]

I had a small colony grouped together on a piece of LR. I made a slurry out of kalk paste and ro/di water and covered the colony. They did not come back.