I think this gray white fuzzy thing is a sponge ? I've read elsewhere that its not really good unless its what your going for, given I have a mixed reef tank is it best to remove this ? and if so how ??
https://u.pcloud.link/publink/show?code=XZgqPQ0Z1OCplFTKULJKIlXVtPogejIcWjCk
https://u.pcloud.link/publink/show?code=XZgqPQ0Z1OCplFTKULJKIlXVtPogejIcWjCk
