short tubie things

[PsiStar]

These are next on the list of unknowns. The length is ~3/8". They came out on the live rock several days after introduction a few months ago. Can't tell if there are more now than 3 months ago.

 

[Aquarian]

Vermetid snail if the tube is riged good for the tank
Hydroids if the tube is soft keep them in check they can sting coral, and takeover the tank if they go unchecked. I'm think yours are vermetid snails but its hard to tell from the pic.
http://www.lionfishlair.com/hitchhiker/hitchhiker.shtml

 

[PsiStar]

I am pretty sure they are rigid, but there fine strings floating from them

 

[chichimom79]

Yep, vermetid snails

 

[PsiStar]

What controls vermetid snails? I just added hard coral.

 

[PsiStar]

I looked into vermetid snails a little more. Two anecdotal take aways; reducing feeding may reduce the population as they are detritus feeders. The function of the webs is to catch particles floating in the water. Less food goes in, less food floating by. Second, some notice decreased population as the tank ages. So reducing the amount of food given might not have anything to do with the reduction ... or it might. Guess I'll just wait.

 

[RockStacker]

I looked into vermetid snails a little more. Two anecdotal take aways; reducing feeding may reduce the population as they are detritus feeders. The function of the webs is to catch particles floating in the water. Less food goes in, less food floating by. Second, some notice decreased population as the tank ages. So reducing the amount of food given might not have anything to do with the reduction ... or it might. Guess I'll just wait.

Mature tanks have more effective competition for detritus and floating foods.
So the vermetids end up being close to the last in line and their population decreases as a result.