Do people but water half way for their goldfish for mor oxygen?

if u have a filter do u still need to do that?Do people but water half way for their goldfish for mor oxygen?
people only do this when they make the mistake of buying a bowl for their goldfish and realize it because their goldfish start gasping for air at the top. bowls usually get smaller towards the top, so the idea there is the less it's filled the more surface area you have so more air.





however, if you have a proper sized tank and decent filter you do not need to do this.Do people but water half way for their goldfish for mor oxygen?
The water level will not improve the amount of oxygen. You want more SURFACE area, and half a tank will still have the same surface area. Basically, the best way to oxygenate the water is by using a power filter or something that breaks the surface of the water. Plants can help too, but goldfish can be tough on plants.
A filter is to keep the water clean %26amp; clear.


The tank needs to be full- less water gets toxic quicker.


You have to have an air pump and airhose in the tank because fish get their oxygen from the water.


Tank, Filter, and airhose setup.
only without filter