Red leaves growing on live rock good or bad and *** is it?!?

there's others that look like this as well i posted up another thread in that nano reef planted marine aquariums to see what responses i get... and will let you guys no

 

That's pretty interesting lol

 

Nope.. Sea lettuce is green WEll, what most people call Sea Lettuce.

This is a fine species, it won't take over and is easy to control.

 

I love this answer
sweet!!

 

I had some brown discs like that. they had lines like a record. I got rid of them but now i kind of miss them

 

Looks like dragons breath a type of macro algae

 

I have something very similar in my fuge. To me your pictures look like Red Bubble Algae that has fully grown and basically popped itself open making what looks like individual leaflettes. I have kept mine because its slow growing and doesn't seem to be taking over.