Wierd things on rock...

[jester23]

Hello everyone. I have recently noticed that I have some whitish-transparent things growing on my LR. Some of them are like little veins or something that are nearly transparent. The others are little clear tubes attached to the rock. They dont move and they keep spreading. I do not have pics yet. I will try to get some. Anybody know what they are?

 

[cmor1701d]

A pick would help. Try this link:

HITCHHIKER FAQ

 

[Hinds04]

I had these too. No idea

 

[Jimbo7]

They are a common filter feeder if i remember right. I asked the same thing a long time ago. They are harmless though.