CO2 By Human Respiration

ummyeah · 10-19-2007, 01:43 AM

Has anyone seen this on TheKrib? He says it takes 3-5 minutes every two days and it is enough for a 75 gallon. http://www.thekrib.com/Plants/CO2/mouth.html

gotcheaprice · 10-19-2007, 02:01 AM

Yeah, say it before, but are you really willing to blow into a bag every two days? o_O I think I'd find it annoying eventually.

ummyeah · 10-19-2007, 02:03 AM

If it saves me $150 then maybe.

evercl92 · 10-19-2007, 02:27 AM

I figure you'll get what you pay for with this one...

tropicalfish · 10-19-2007, 02:32 AM

It won't work... effectively.

Human breath is CO2, nitrogen, and other air, all except oxygen. The air contains about 79% nitrogen. Thus, you breath out about 79% nitrogen. Add the other elements and you have less than 15 percent CO2 going in...
I forgot the exact figures.

**fishscale** · 10-19-2007, 02:47 AM

Technically, it should also contain oxygen as well. Think about it, how else would rescue breathing or CPR work? This line of reasoning would mean that you could rely on your fish to produce enough CO2 for your plants. Yes, technically, it will work, but it's really crappy.

dapellegrini · 10-19-2007, 02:59 AM

if that doesn't work, you could try this:

mithrandir · 10-19-2007, 03:01 AM

yeah I think you only use 4% oxygen out of the air you breath so... I don't believe your gonna get that much c02

**AquaNerd** · 10-19-2007, 03:05 AM

The DIY yeast method would be much better and still very cheap.
At least its only annoying every 2 weeks to a month.

spypet · 10-19-2007, 03:05 AM

Quote:

Originally Posted by fishscale

Think about it, how else would rescue breathing or CPR work?

CPR has nothing to do with Oxygenation, if has to do with restarting a person's involuntary breathing and heartbeat.
Oxygen is only needed once circulation resumes in order to reduce the chance of damage to oxygen starved brain cells.
Our lungs are very efficient Oxygen exchange systems. whatever oxygen is found in our exhale is unused from our windpipe.

**Madfish** · 10-19-2007, 03:09 AM

Wow where do I get one of them straw set ups. Thats just what I was looking for. As for O2 that we take in is around 9-8% and we release about 4% of that. So all in all you are only putting out 4% CO2

Fishingnooby · 10-19-2007, 03:14 AM

IM not even sure that you can Produce enough psi to make it go through the plate

**boink** · 10-19-2007, 05:01 AM

Quote:

Originally Posted by Fishingnooby

IM not even sure that you can Produce enough psi to make it go through the plate

....so whos gonna step up and say they can blow hard?...

**eyebeatbadgers** · 10-19-2007, 11:13 AM

Quote:

Originally Posted by boink

....so whos gonna step up and say they can blow hard?...

I think it was Rex that said in a post a couple weeks ago that he can suck harder than he blows

Hahahhahahahahahahha

ummyeah · 10-19-2007, 01:43 PM

So how come it worked for him?

10-19-2007, 02:27 AM	#4 (permalink)
evercl92 Planted Tank Obsessed (View User Tanks) PTrader: (13) Join Date: Aug 2006 Location: Columbus, OH Posts: 490	I figure you'll get what you pay for with this one... __________________ Check us out: http://2slowracing.com/

10-19-2007, 02:32 AM	#5 (permalink)
tropicalfish Planted Tank Enthusiast (View User Tanks) PTrader: (0) Join Date: Mar 2007 Location: Plano, Texas Posts: 908	It won't work... effectively. Human breath is CO2, nitrogen, and other air, all except oxygen. The air contains about 79% nitrogen. Thus, you breath out about 79% nitrogen. Add the other elements and you have less than 15 percent CO2 going in... I forgot the exact figures. __________________ Rena Filtstar #137!

10-19-2007, 02:47 AM	#6 (permalink)
fishscale O.G. - original guppy. (View User Tanks) PTrader: (10) Join Date: May 2007 Location: Ann Arbor, MI Posts: 3,316	Technically, it should also contain oxygen as well. Think about it, how else would rescue breathing or CPR work? This line of reasoning would mean that you could rely on your fish to produce enough CO2 for your plants. Yes, technically, it will work, but it's really crappy. __________________ Eheim Pimp #254, Eheim Wolverine #1 55 Gallon Work in progress 10 Gallon Shrimp Tank 10 Gallon Planted QT 20 Gallon Shrimp Tank (Work in progress)

10-19-2007, 02:59 AM	#7 (permalink)
dapellegrini Planted Member (View User Tanks) PTrader: (4) Join Date: Oct 2006 Location: Phoenix, AZ Posts: 196	if that doesn't work, you could try this: __________________

10-19-2007, 03:05 AM	#9 (permalink)
AquaNerd Algae Grower (View User Tanks) PTrader: (0) Join Date: Dec 2004 Location: Alberta, Canada Posts: 84	The DIY yeast method would be much better and still very cheap. At least its only annoying every 2 weeks to a month. __________________ 33US gallons Pressurized CO2 96 Watt Coralife Light Strip + 2 25 Watt fluorescent tubes under a Aquamirror Sand 200 Watt submersible Tronic heater Temperature 27.1 Celsius (81 Fahrenheit) Dosing EI Method KNO3, KH2PO4, MgSO4+7H2O, and trace.

10-19-2007, 02:01 AM	#2 (permalink)
gotcheaprice Planted Tank Obsessed (View User Tanks) PTrader: (2) Join Date: Aug 2007 Location: HI Posts: 465	Yeah, say it before, but are you really willing to blow into a bag every two days? o_O I think I'd find it annoying eventually.

10-19-2007, 02:03 AM	#3 (permalink)
ummyeah Banned (View User Tanks) PTrader: (0) Join Date: Jul 2007 Location: USA Posts: 195	If it saves me $150 then maybe.

10-19-2007, 03:01 AM	#8 (permalink)
mithrandir Algae Grower (View User Tanks) PTrader: (0) Join Date: Oct 2007 Location: Canada Posts: 22	yeah I think you only use 4% oxygen out of the air you breath so... I don't believe your gonna get that much c02

10-19-2007, 03:09 AM	#11 (permalink)
Madfish Keeper of the Algae (View User Tanks) PTrader: (10) Join Date: Sep 2007 Location: Hooper, Utah Posts: 604	Wow where do I get one of them straw set ups. Thats just what I was looking for. As for O2 that we take in is around 9-8% and we release about 4% of that. So all in all you are only putting out 4% CO2 __________________ Whats this green fuzzy stuff thats growing in my tank.

10-19-2007, 03:14 AM	#12 (permalink)
Fishingnooby Algae Grower (View User Tanks) PTrader: (2) Join Date: Aug 2007 Location: PA Posts: 47	IM not even sure that you can Produce enough psi to make it go through the plate

10-19-2007, 01:43 PM	#15 (permalink)
ummyeah Banned (View User Tanks) PTrader: (0) Join Date: Jul 2007 Location: USA Posts: 195	So how come it worked for him?

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