I moved one of my turbos down to the nano on my desk this morning because the GHA is threatening to get out of hand. I've got some macro algae in there as well so I don't mind the planted look, but I didn't want it to get out of control. He went to work immediately. You can see in this picture the super clean piece of rock that he has just cut a swath through:
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And he's still going. No idea how he's eating so much.

And he's still going. No idea how he's eating so much.