Oxygenation

[Buglet]

We just re-aquascaped our 6 gallon Eclipse, whose sole inhabitant is our 1.5" comet goldfish. We added a buble wall, in part because he loved to play in the stream of bubbles from the airstone, and thought he would love the bubble wall (which he does!).

My concern in the oxygen level in the tank--can it ever be too high? What is happening is that the filter intake is sucking in some of the bubbles directly from the bubble wall, passing this air over the filter media, and then over the bio wheel, which then shoots out the super oxygenated air. You can see the tiny bubbles throughout the water and everything (plants, decorations, etc.) are covered with them.

We choked the air back a bit on the bubble wall but it doesn't seem to make much of a difference.

I am also wondering if sucking in all that air is bad for the filter/biowheel?

Your thoughts are appreciated!

 

[SirMinion]

No, you cannot put too much oxygen into the water, but you can put too many bubbles causing the fish stress. Just make sure that there's a calm area he can escape to if he wants to.

 

[Fish Buddy]

Goldfish need a lot of oxygen. The only way a person would have a problem with over oxygenation would be if he were looking after plants (you do have fake plants right?)
Also, I would recommend getting a larger aquarium at some point. Althought your goldfish might fit into the aquarium you have now-If you want it to last more than 5 years, you should get a 20 us gallon. (you might have heard the rumor about how fish only grow to their environment?)

Sorry if I sound like a drag-just want to help.

 

[CFC]

No, you cannot put too much oxygen into the water, but you can put too many bubbles causing the fish stress. Just make sure that there's a calm area he can escape to if he wants to.

You can actually over saturate water with oxygen though it is usually associated with tanks that are heavily planted (or have a bad algea problem) and recieve too much light, especially natural sunlight. The result is the fishes blood too becomes over saturated and the excess gasses try to escape through what ever means they can leaving the fish covered in small air filled bubbles on the skin, the condition is commonly known as gas bubble disease.

Luckily part of the cure for gas bubble disease is to run a airstone in the tank for a while to help the excess gasses escape from the water column so your tank will be safe from this but i thought that i should correct the common myth that "you cant have too much oxygen", like everything too much of a good thing can be bad.