Shine a bright LED flashlight on them at night when they're closed up. Move the light around for several minutes to check out every nook and cranny.
Zoo eating nudi's are a high probability. I just lost a whack of zoos to them. They're recovering now, but I still see a nudi here and there.
You just have to be patient and look really hard.
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Gary
Tank was up for 7yrs and 10months. Thanks Everyone!
2016/2017 180Gallon Build Coming Soon...
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