please id

[studiofish]

please tell me wat this is they are all over my tank looks like they r tubes of some sort growing all over my rocks

 

[Master Shake]

sponge if it doesnt move, if it moves i have no clue. kinda looks a little bit like octopus legs in the upper right hand corner

 

[KathyC]

http://www.reefkeeping.com/issues/2005-03/rs/

They look like colonial tunicates to me.

 

[studiofish]

it still has me wondering if it good or bad its was the first thing to grow after my tank cycled before any fish any corals and rocks had been in a 30gal tube for two months

 

[KathyC]

Obviously they came in on your rock...lol Had you purchased live rock to start this tank?

You can face them away from view. As mentioned in the article I linked, they will most likely die anyway as they are filter feeders and will not get enough nourishment in a tank anyway. They do not grow very quickly, so it is highly doubtful they will overtake your corals/rock.
You can always peel them off and dispose of them if you are uncomfortable having them in the tank.