Help w/ID of sponge

[vcarrillo]

Hello - noticed some quick growing sponges, one on the side of a torch and the other taking over a piece of GSP. Any ID assistance or recommendations for removal appreciated! I could just remove the gsp but I want to make sure this won't harm or take over my torch coral most importantly.

 

[A Young reefer]

Looks like white sponges to me, generally not harmful unless they over grow and start smothering the corals. You could manually remove them.

 

[EeyoreIsMySpiritAnimal]

Hydrogen peroxide