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Cantide756 t1_jdoj9iv wrote

After I reached equilibrium I sealed the tank. Only input was light and an external heat source. Maybe some sloshing around from a magnet scrubber

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TurretLauncher OP t1_jdokn9w wrote

Tanks are shaped in certain ways precisely in order to ensure a water surface which permits sufficient interactions with the atmosphere, enabling oxygen and CO2 exchanges etc. If you seal off the tank, this can no longer happen. Death would actually be the expected result of doing that.

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