How much air do fish need?

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R

Riftraft

Feeder Fish
MFK Member
Jul 20, 2012
681
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Upstate NY
I know air is a very important part of keeping fish in an aquarium, but my real question is how much air do they really need. Currently I have a 75 gallon, 29 gallon, and a 15 gallon. The the 29 and 15 have air pumps rated for 10 gal and my 75 has one rated for 15-20 I believe (been a while since purchased). I was just wondering if I am doing a disservice to my fish by not having one rated for 75-80 gallons? If so I will make the purchase. Just wondering what everyone else's thoughts were on this subject. Very interested to hear.


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The air pumps are rated for gallons only if you are using them to run a filter ie sponge undergravel things like that. Now some times if you are using a small air pump and put it in a rather large tank it doesn't have the power to push through the hose. But in your situation if its working and look how you want it to look then your fine.

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Air has many ways of entering the water column, from agitation, mechanical bubbles, venturi valves, current, filtering etc. As long as you have good current and agitation you don't really need bubbles, but again that's all relative to your setup and stock. Warmer temps also deplete oxygen, I always run bubbles, i like the look and sound of them!



Go S. Vettel #1 rb8
 
Ok, that all makes sense. I also have a HOB filter that creates oxygen, but yea I agree. I also like the look of the bubbles. I just wanted to make sure that there was enough oxygen in the water. Thanks guys!


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Good water circulation is all that is needed. I read an article a little while ago that gave specifics to how to get more 02 in the water but will have to search for it. When I find it I'll post it. Intersting thing was, it stated that there is only 20% usable oxygen in the water for the fish.

I believe this was the article. Mainly deals with ponds but there really is not much difference other than size. I would assume the same would apply to indoor fish tanks as well.

http://www.fao.org/docrep/X5744E/x5744e0m.htm
 
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