anyone know what this thing is growing on my live rock?

  • We are currently upgrading MFK. thanks! -neo
SimonL;4764925; said:
They're totally safe, just a harmless filter feeder. In nature, they form a symbiotic relationship with coral like Porites (the skeleton is the rock in the pic). If you want them to live, dose the tank regularly with phytoplankton.

:thumbsup:
 
MonsterFishKeepers.com