Algae Growth Pattern

[droidus]

I noticed on my tank, this beautiful pattern of algae growth. I have a snail, but I doubt he made this pattern. Is this common? I just thought it was so neat!!

 

[afartindolphin]

I noticed on my tank, this beautiful pattern of algae growth. I have a snail, but I doubt he made this pattern. Is this common? I just thought it was so neat!!

Pretty sure that was your snail. Busy guy