Can you have too much air in your tropical fish aquarium?

No, it is not possible to have too much air in a tropical fish aquarium. While adequate oxygen is essential for the health of tropical fish, the amount of air that is dissolved in water is limited by the water's temperature and pressure. As water temperature increases, its capacity to hold dissolved oxygen decreases, and as water pressure increases, its capacity to hold dissolved oxygen increases. Tropical fish require water that is within a certain temperature range and has a certain level of dissolved oxygen. As long as the water in the aquarium meets these requirements, there is no danger of having too much air.