White/Yellow Spheres - Is it fungi?

[Dominik K]

Hi

I have just noticed some small yellow/white spheres - about 5mm in diameter

They are too big to be an egg of any of my animals

I think they must be some sort of fungus.
Has anyone experienced this, and is it safe to remove/ should it be removed.

 

[mort]

Do you have a picture?

What libestock do you have and have you ever added any root tabs?