I find its mostly when they're fighting against the flow in certain areas.. they cling up against the glass, waddle *clack*, waddle *clack* on the glass.
With every little smack, they are slowly weakening the tank.... TO ESCAPE!.. Maybe I should put a tv in front of the tank and play finding nemo for them...
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28g Nano Cube drilled with 13g sump in stock stand. Vertex IN80 Skimmer, Phosban 150 Reactor, Apex Controller, DIY LED with stock hood, dimmable
Established March 2006
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