How does air get into the water?

[kennykimny]

Might be a really dumb question....

...but how is air introduced into the water? I know that the surface of the water and gas exchange between the water and air is one way...but do the filters creating bubbles have anything to do with it? If it does, is it a problem that my water level meets the bottom of the output of my filter, and creates very few bubbles?

I have a 29 gallon FOWLR tank with a Whisper 30 (145 gph output) with an Emperor 400 (400 gph output), for a turnover of nearly 20 times per hour.

Do you think a bubbler/air stone is necessary?

Thanks for your help,
Kenny

 

[jsimpson123]

Do u have a skimmer? cause skimmers airrate water pretty well

 

[kennykimny]

No I don't...

 

[demonsp]

Through water surface exchange.

 

[ThaNgBOm321]

no, a air stone is not needed... you use to see lots of tanks w/air stones ans buble making devices because they where one of the only choices of devices to cause surface agitation... which in turn leads to gas exchange...

skimmers do in fact add to gas exchange but according to a podcast i saw E. Bronaman ( sp?) he experimented with oxygen levels in various tanks (all simular except for the main means of gas exchange) and it turns out that growing plants in a body of water ( our fuge in out case ) supplies the most air to our water...

i went back ( way back) to find the podcast but dint find it.. so you have to do it the old fashion way.. reading.. ( i think this is it.. i skimmed it to see if the info even has to do w/oxygen.... looks like it)

http://reefkeeping.com/issues/2005-06/eb/index.php

http://reefkeeping.com/issues/2005-07/eb/index.php

http://reefkeeping.com/issues/2005-08/eb/index.php

happy reading!
YzGyz