dark purple stuff on snail’s shell

[reeferdugong]

Hi guys, i got few trochus snails yesterday and i noticed one snail with dark purple stuff on it. Another smaller snail has a small dark bulge, almost black on it’s shell. Anyone knows what they are and should i be concerned?




All of my snails are in the QT tank now and won’t eat the algae wafers i throw in there..Even no luck with nori.

 

[CanuckReefer]

Looks Calcareous algae to my eyes by pics....it can manifest from light to very dark purple....

 

[reeferdugong]

is that some kind of coralline then? if yes, then it’s a good thing for sure!

 

[CanuckReefer]

is that some kind of coralline then? if yes, then it’s a good thing for sure!

Yes exactly looks Coraline to me....