Do anybody know about this hard pinky/purple things that grow at my live rock?

[Frooxz]

It was started only 2 or 3 that actually there, but after around 6-7 month, it multiply.
should I worried?
Its really hard and kind of stony

Thanks!

 

[fishguy242]

hi welcome to the reef going to love it here!!
lots of fun/info/fun/help/fun....
not sure what called believe safe @KJ..teach us something

 

[ZipAdeeZoa]

Looks like Red Foraminiferen, harnless filter feeder I believe

 

[Frooxz]

Many thanks guys! @fishguy242 @ZipAdeeZoa

 

[KJ]

Looks like Red Foraminiferen, harnless filter feeder I believe

Agree.

 

[NashobaTek]

Welcome to the team!

 

[Cell]

Welcome to R2R! Cool hitchhiker!