A bug tank does sound like fun. My friend and neighbor
and potter (potted too, occasionally) Rick did this
a few years ago. He found (rather quickly) that aquatic
trout stream insects need lots of oxygen and cool water
temperatures, else they die in a few days.
Aquarium bubblers are cheap and easy to install.
Refridgerating the water by some thermostatically
controlled mechansism is not so straightforward.
Rick eventually gave up on the project.
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