candle/fishtank?

i'm wondering if a few pygmy cories would fit in there?

otherwise yeh the otos would do well.

Make sure you take a bit of sandpaper over the metal before applying the silicon then it will stick alot better. Other than that I think it will be fine.

Or if you have the access to some tools, you might want to cut a circle of acylic to seal in at the bottom rather than using all that silicon.

....or use G4 pond sealant on the bottom.
 

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