A thorough tank cleaning that removes debris from the gravel will turn that around, and good ongoing maintenance will help prevent the problem from reoccurring. Although it is not a common occurrence, live plants can be a cause of low oxygen in an aquarium. When they are exposed to light, all plants use carbon dioxide CO 2 and give off oxygen O 2.
But when the tank or pond is dark the process reverses, and all plants including all algae will consume oxygen. If the aquarium has reduced or no light for a lengthy period, the plants or algae in the system could deplete enough of the oxygen to cause the fish to be affected.
The obvious solution is to increase the lighting. Some chemicals used to treat disease or modify water parameters can also impact the oxygen-carrying capacity of the water. Always increase water circulation when medicating the fish. When troubleshooting an oxygen problem, discontinue the use of any chemicals that are not absolutely needed.
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To change or withdraw your consent choices for TheSprucePets. At any time, you can update your settings through the "EU Privacy" link at the bottom of any page. Survey Manual. Many, but not all, fish kills in the summer result from low concentrations of dissolved oxygen in the water. Fish, like all other complex life forms, need oxygen to survive. They get theirs in the form of oxygen gas dissolved in the water. That's why it's important to have an aeration device, a bubbler, in your home aquarium.
Warm water holds less dissolved oxygen than cold water, so summer is the time when fish can have a hard time getting enough oxygen. Other organisms use oxygen, too, including the algae that grow in the summer and bacteria that degrade organic matter. During the day, the algae produce oxygen through photosynthesis, but at night, when photosynthesis stops, they and other organisms keep respiring, using up oxygen.
So on warm summer nights during algal blooms , the dissolved-oxygen concentration sometimes drops too low for the fish, and a die-off can occur. Download your free guides You've nine free days out guides to choose from - where will you go first? Safety on our waterways Open water swimming Safety during flooding Summer water safety Winter water safety James' story. Find a walk near you Are you ready to ramble? Wellbeing with Well-B Discover how you can recharge when spending time by water.
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Aerator adding oxygen to the water at Selby Canal. Where does oxygen come from? Why do most living things need oxygen?
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