Do you oxygenize the water to make the fish happier? - The Planted Tank Forum
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post #1 of 22 (permalink) Old 05-31-2011, 04:42 AM Thread Starter
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Do you oxygenize the water to make the fish happier?

as the title says, do you oxygenize the water by adding airstone or simply increase surface movement? would that make the fish happier?
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post #2 of 22 (permalink) Old 05-31-2011, 04:59 AM
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Increasing surface movement does oxygenate the water. If you use high light, with the high CO2 concentration that is required with that much light, you have to keep the water surface rippled to keep enough oxygen in the water for the fish to be able to tolerate all of that CO2. With lower light, and lower CO2 concentration, it isn't as critical, but it is always good for the fish.

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post #3 of 22 (permalink) Old 05-31-2011, 02:01 PM
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Lately I have added an air wand (28") to my tank and it comes on for 5 hrs. in the middle of the night, I noticed last night that the pump was on but no air was coming from the wand, it seems to get clogged quicky with hard water deposits. I started using mine for better water clarity and a surface film, it does help in these areas and some of my fish like to set in the stream of bubbles and get a massage (SAE) every night.


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post #4 of 22 (permalink) Old 05-31-2011, 02:05 PM
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If your plants are photosynthesizing properly then they will be adding enough O2 back to the water for your fish to breathe. I've never worried about increasing surface agitation unless my plant mass was very low, or it was a non-CO2 tank. On non-CO2 tanks, increasing surface agitation is actually preferable, because this way you are maintaining the CO2 levels at a constant rate, as it stays consistent with atmospheric levels.
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post #5 of 22 (permalink) Old 05-31-2011, 02:50 PM
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I too use healthy, growing plants for "oxygenizing". Not to be confused with water circulation which is related and important as well.


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post #6 of 22 (permalink) Old 05-31-2011, 02:56 PM Thread Starter
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cool. thanks for all the hints!
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post #7 of 22 (permalink) Old 05-31-2011, 04:29 PM
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Even though I use a sump which helps oxygenate water too my fish are livelier when there is a good ripple on the water surface.
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post #8 of 22 (permalink) Old 05-31-2011, 06:25 PM
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If your injecting don't oxygenate and minimize your surface agitation or you will counter act the CO2 injection. I would simply suggest plant heavily and get a drop checker to be sure you aren't over saturating the water with CO2


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post #9 of 22 (permalink) Old 05-31-2011, 06:45 PM
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post #10 of 22 (permalink) Old 05-31-2011, 07:46 PM
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Quote:
Originally Posted by Blacksunshine View Post
If your injecting don't oxygenate and minimize your surface agitation or you will counter act the CO2 injection. I would simply suggest plant heavily and get a drop checker to be sure you aren't over saturating the water with CO2
FWIW I'm going to disagree a bit. Good circulation throughout the tank including good surface agitation is good for the whole tank and that includes fish, plants, inverts and bacteria. The surface agitation serves to promote gas exchange so your tank is well oxygenated and good circulation moves water to the surface so gases can be exchanged and carries the oxygenated water to all areas of the tank. Any CO2 loss due to increased surface agitation can easily be compensated for by increasing your rate of CO2 injection. Surface agitation combined with good circulation helps oxygenate the water and is good for all.
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post #11 of 22 (permalink) Old 05-31-2011, 07:50 PM
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I think people who are afraid of co2 loss due to surface agitation have read too much on the internet....

Keeping your tank rich in co2 does not mean we should keep it devoid of oxygen.
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post #12 of 22 (permalink) Old 05-31-2011, 08:12 PM
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Agreed...and they are probably students of the yeast method... Pressurize, circulate, and agitate.
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post #13 of 22 (permalink) Old 05-31-2011, 08:16 PM
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was looking for a place to start...Ive lurked on the forums for a few weeks now and decided to join because Im going to start a journal "soon"

I am in the minority I guess
I aim for very little surface movement...but use an airpump connected to a RG reactor

it kicks on 2mins before lights out and by the time the lights come on the next morning, the trapped bubble in the reactor is gone

I do this because I run my CO2 24/7 though...but only gassed fish in the very beginning when I got my pressurized tank/regulator

I figure my plants do the work for the day...and the airpump/reactor does it for the night
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post #14 of 22 (permalink) Old 05-31-2011, 08:36 PM
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I think this was an old way of thinking and it may make some difference but I've seen tanks with heavy surface movement that are beautiful.


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post #15 of 22 (permalink) Old 05-31-2011, 08:40 PM
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