I have a small tank with an under gravel filter.
At some point, a guppy fry managed to swim down the circulation tube (while the bubbles were going full blast) and set up house in the cavity between the gravel and the bottom glass of the tank.
I see him (it's a he) from time to time.
Although he seems fine, and is even growing normally, I'd like him to rejoin the rest of the fish in the "over world".
I can't take the circulation tube off without gravel filling the "under world". I don't want to turn the bubbles off (now a power head) for too long.
How might I get resurrect him?