Small transparent cylinders, what is this?

[road102]

Hi !!

This is my first saltwater tank, this white/transparent thing is starting to grow in bright and dark areas, also in high flow and low flow areas of the tank. Tank is 9 months old and pink coraline is starting to grow everywhere.

I have not introduced anything in about 8 months, any ideas?

Thanks !

 

[vtecintegra]

Tunicates. Harmless. Mine disappeared over time.

 

[Alaeriel]

Sea squirts! Tunicates are very neat. Great setup! Looking forward to how it develops

 

[road102]

ty!

 

[Duncan62]

Sea squirts! Tunicates are very neat. Great setup! Looking forward to how it develops

Mine moved to the sump and behind the overflow box. It's a sign of your tanks maturity. Have you got any red ones? Look in the holes in the rock. The red ones seem to do well in the shade