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by petre
2497 days ago
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It's the temperature, not the CO2. I have fresh water shrimp and some fish. If you raise the temperature over 30°C, less oxygen dissolves into the water and there's not enough for the critters to breathe. It's basically asphyxiation. Labyrinth fish are adapted, since they can breathe air as well, but they do it merely for survival, they too become stressed and die after a while. Also some types of algae grow faster when the water is warmer. More algae = more O2 uptake during daytime. |
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