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-   -   air stones (o2) in conjunction with co2 (http://www.plantedtank.net/forums/showthread.php?t=294970)

wizza 04-02-2013 07:10 PM

air stones (o2) in conjunction with co2
 
Hi,

Is it THAT terrible to have an air stone going whilst injecting co2?

Reason why I ask is because my aquarium has a glass lid with a wooden canopy on top.

Which causes trouble getting o2 in there.(poor gas exchange)

I can't remove the lid because the wooden canopy get wet via evaporation.

So I guess the question is if I can still get sufficient Co2 in there is this method ok?

I'm on the second day of this and in 18 months of converting my tank to a planted one its the first time I'm getting pearling.

Wouldn't this emulate why some people believe that their best growth comes from water change day?

Thanks for any input.

danielt 04-02-2013 07:49 PM

So, you're drinking and taking antibiotics at the same time :)

CO2 is a highly unstable gas dissolved in water. Surface agitation created by the bubbling will make the CO2 gas off.

If you want to keep things in check, dose less CO2. In my opinion, a canopy is more of a design thing than a functional component useful to an aquarium.

wizza 04-02-2013 08:20 PM

Ok thanks.

The problem is if I dose less Co2 I would have to cut back on light and my aim is to have a high tech tank.

The 'canopy' also doubles as my lighting system.

Zorfox 04-02-2013 08:48 PM

I would assume if you increased the CO2 bubble rate to compensate you could do that. I would just install an exhaust fan to exchange the air under the canopy, an added benefit would be removing the heat from the lights.

wizza 04-02-2013 08:53 PM

Quote:

Originally Posted by Zorfox (Post 3015226)
I would assume if you increased the CO2 bubble rate to compensate you could do that. I would just install an exhaust fan to exchange the air under the canopy, an added benefit would be removing the heat from the lights.

Now that's an idea!

Maybe a project for the summer!

But for now I guess I'll see how it goes unless someone chimes in and goes noooooiooo! Lol.

:icon_smil

danielt 04-02-2013 08:58 PM

+1 on the fan.

CO2 does not force you to increase light if we're talking about plant growth. It's the other way around. Also, from the fish's perspective, the O2 produced by the plants will not keep them from dying if you go over board.

wizza 04-02-2013 09:13 PM

Quote:

Originally Posted by danielt (Post 3015338)
+1 on the fan.

CO2 does not force you to increase light if we're talking about plant growth. It's the other way around. Also, from the fish's perspective, the O2 produced by the plants will not keep them from dying if you go over board.

Sorry I think I'm not getting what your saying.

If I used less Co2 I would have to cut the light because I would be Co2 deficient.

I believe I have (up until the air stone) a severe o2 deficiency.

(due to glass and canopy)

puopg 04-02-2013 10:01 PM

Quote:

Originally Posted by wizza (Post 3015490)
Sorry I think I'm not getting what your saying.

If I used less Co2 I would have to cut the light because I would be Co2 deficient.

I believe I have (up until the air stone) a severe o2 deficiency.

(due to glass and canopy)

I think both you and daniel just said the same thing haha. You are correct that light drives the CO2 demand by plants. I would advise against the airstone during the day since you will be degassing CO2 quite a bit. What you can do if you don't have a wet/dry filter is to increase surface agitation or decrease your light as you said. This can be done by a small fan, raising filter output, powerhead pointed up. Just try not to break the waters surface too much.

puopg 04-02-2013 10:15 PM

Quote:

Originally Posted by wizza (Post 3014202)
Wouldn't this emulate why some people believe that their best growth comes from water change day?

The water that you get from tap has a lot of dissolved CO2 in it so not necessarily. But hey if you are seeing nice growth and little algae, keep doing it. We don't know how much light you actually have so you might have 70 PAR or 5. That will determine how much CO2 you need for the most part.

ThatGuyWithTheFish 04-02-2013 10:18 PM

Are you fish having problems?

wizza 04-03-2013 11:10 AM

Quote:

Originally Posted by ThatGuyWithTheFish (Post 3016058)
Are you fish having problems?

What it is I've recently added more light.
I went from 2 54w t5 to 3.

Bear in mind though the tubes are 3ft and the tank is 5 ft 100 gallons(so they are staggered)

The 3rd tube I brought to the front for light spread.

I'm supplying Co2 through an fx5 where up until now I have had one of the out let's pointing to the surface.

But due to the extra light now I've had to point both outlets down now (for the Co2 to get in the water due to the Co2 being in more demand than ever.

So I figured I would get some o2 (maybe more also) via a stone.

danielt 04-03-2013 12:55 PM

Lol, you said the same thing as me but in reverse :)

Ok, ok, there's this misconception that somehow the Oxygen bubbles increase O2 levels. They increase the O2 levels by the surface agitation they create. Not because you are fizzing gas in the water. O2, as far as I know, is less soluble in water than CO2.

You may run the airstone at night, if you want to, but that will not save your fish during the day.

wizza 04-03-2013 03:12 PM

Quote:

Originally Posted by danielt (Post 3021426)
Lol, you said the same thing as me but in reverse :)

Ok, ok, there's this misconception that somehow the Oxygen bubbles increase O2 levels. They increase the O2 levels by the surface agitation they create. Not because you are fizzing gas in the water. O2, as far as I know, is less soluble in water than CO2.

You may run the airstone at night, if you want to, but that will not save your fish during the day.

Lol.

Funny enough I was recently reading an article about air stones and it mentioned all it does is move water.

So even still I'll try that and use the fx5 once again solely for co2/filteration.


Many thanks all.


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