I've noticed that several of my scobies have developed a discoloration along the edge in couple of places. Is this is something to worry about or is this normal? Here is a picture of one.
https://photos.app.goo.gl/eT6pNGm822Y8ybdN8
https://photos.app.goo.gl/GzFEoiK6Q7GhKbGH8
