Oxygen deprivation is caused by a lack of water aeration, overstocked fish and/or high water temperature.
The use of airstones can prevent this problem in most cases. Only stock your aquarium with 1 inch of fish per gallon as a generally rule (some fish require different oxygen levels, such as goldfish). Reduce aquarium temperature.
- Most fish in the aquarium will be at the surface gulping for air.
- Fish will lose color
- Less energy
- Provide an airstone
- Reduce fish population
- Create surface agitation with filters or water pumps