Do I need an airstone?

Does no one have fish that swim back and forth through the bubbles?

I had a couple cories (two or three out of a small group of six) that obviously enjoyed some "play" with bubbles - they'd swim back and forth over the bubbles pausing momentarily to let the bubbles push them up a little bit, then keep on swimming.
 
Does no one have fish that swim back and forth through the bubbles?

I had a couple cories (two or three out of a small group of six) that obviously enjoyed some "play" with bubbles - they'd swim back and forth over the bubbles pausing momentarily to let the bubbles push them up a little bit, then keep on swimming.

Yup same here, my father told me u cant really have a specific answer for it, but it probally jus feels good up against there body, mayb like a little massage. And everything, everyone loves to have fun, yes fish arent smart enough to realize what the bubbler is, but they do swim through it for fun, just like how they play chase with other fish nd so on.


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Bubbles also dissolve on their way to the surface and add O2 that way as well.

The bubbles are not O2, just air, which is mostly Nitrogen. For the bubbles to dissolve some oxygen on the way up you must add use O2 bottle for that to happen.

Not saying your wrong, but the air around us will not be adding O2 to our tanks.
 
I did not have one at first but I did get one and the fish looked like they were doing better with it. Now the swim through it all the time. I would say get one they don't cost very much at Walmart. Maybe everything you need would be around $15.
 
but the air around us will not be adding O2 to our tanks.
This is not true. Although "air" is mostly hydrogen, it does contain enough 02 to sustain life (obviously). Pure 02 is not that good for you, makes you dizzy, etc.

Raising bubbles and surface disturbance does in fact introduce oxygen into the water.
 
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