Wildeone
New member
I thought bubble algae, but it has been growing there for months. I have had a very small amount of bubble algae before, this is not like that. It has been there for months. It is getting larger, but at an extremely slow rate. I actualluy popped it 3 months ago and it was empty and had a very tough skin.
Any ideas? Here is the other one I have, it is much larger, about marble size.

Any ideas? Here is the other one I have, it is much larger, about marble size.
