New Setup, is this a pest?

[Wingin It]

I think maybe i'll treat them as majanos for now...i'd hate for them to be majanos and I do nothing and they take over. For the ones that are on the larger rocks, i'm attempting the shell idea I read earlier...about putting a shell over it and the majano transfers to it and then just throw it away? If that dosen't work, then maybe i'll go find one of those pen torches and burn it off?? lol oh the fun of pest removal! hahaha
Thanks for all the replies!