DWC air bubbling oxygenation formula?

[intlplayr]

In the cellular respiration formula, which occurs in plant roots, six molecules of glucose (C6H12O6) react with six molecules of oxygen to form six molecules of carbon dioxide, six molecules of water, and 36 molecules of ATP. This can be represented by the following chemical equation: 6C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + 36 ATP

Is their anyway to find out how much oxygen I should pump into this for max yields? Is it the more the merrier or is there some way to figure this out mathematically?

Currently I have 4 12" airstones feeding a 9 gallon (4.5 ft x 2.5 ft) reservoir but it seems like the plants that have their roots closest to the bubbles are rooting out faster

 

[!!!]

More is better

 

[intlplayr]

More is better

Just found this article Although they don't address yields specifically, they do go on to say that "although the growth benefit was minor by increasing DO (Dissolved Oxygen) from ambient air saturated level (

8.5 mg L−1) to 30 mg L−1. Higher than 30 mg L−1 could cause reduction in tomato plant growth"

I'm assuming though that by adding increased co2 to the environment and the equation there must be a positive benefit and perhaps it could contribute to how much DO the plant can absorb?

 

[Amstel Light]

http://www.aquacave.com/detail.aspx?ID=205

 

[Amstel Light]

Currently I have 4 12" airstones feeding a 9 gallon (4.5 ft x 2.5 ft) reservoir but it seems like the plants that have their roots closest to the bubbles are rooting out faster

9 gallons in 4x2 would be shallow water cutivation right? any way that dolphin 5 star puts out more than enough for 9 gallons..

 

[intlplayr]

9 gallons in 4x2 would be shallow water cutivation right? any way that dolphin 5 star puts out more than enough for 9 gallons..

It's pretty shallow. The rez fills up to about 4 inches only maybe. That looks like a great pumpo although I do have a pump already and 4 hoses running 4 separate 12" air stones so I don;t think I need another at this point.

I was only asking to help try and facilitate a discussion and to find out if anyone knows the ideal Dissolved Oxygen content that mj plants grow in. Or, if the formula is simply the more the merrier...

 

[elito]

the first 2 pics are of a White russian clones 32days into flower the third one is a plant in soil grown from a clone from the same mother as the 2 in DWC,the one in soil is 55days old,i have a ebb and flow table with the samw clones they are 36days into 12/12 and they look like they are 10 days behind compared to the DWC clones,do to this im also trying to find out why did these plants develop bigger buds faster than the rest,the only thing i put in the system witch probabl isnt common is a dual air pump that u could use in a 20gallon reservoir i placed it in a 4 gallon rez.thats the rez. of these dwc plants on the first 2 pics,im also intrested whats the optimum amount of air u can pump in the water to get the extra results and wheres the limit where u would just be wasting

 

[Wait...What?]

http://www.aquacave.com/detail.aspx?ID=205

I chose this one:
http://www.aquacave.com/alita-al15a-linear-airbr-pump-1020.html

 

[intlplayr]

im also intrested whats the optimum amount of air u can pump in the water to get the extra results and wheres the limit where u would just be wasting

I'm with you, there has to be an answer out there for us. Hopefully someone at IC can point us in the right direction. I have faith....

the first 2 pics are of a White russian clones 32days into flower the third one is a plant in soil grown from a clone from the same mother as the 2 in DWC,the one in soil is 55days old,i have a ebb and flow table with the samw clones they are 36days into 12/12 and they look like they are 10 days behind compared to the DWC clones,do to this im also trying to find out why did these plants develop bigger buds faster than the rest,the only thing i put in the system witch probabl isnt common is a dual air pump that u could use in a 20gallon reservoir i placed it in a 4 gallon rez.thats the rez. of these dwc plants on the first 2 pics

That's interesting. In regards to statistical significance, I'm very interested to know how many plants total from each method are you using to compare?

 

[smokiebear]

I agree with not leagalizing it because things seem to be working th way it is, and all the hydro/grow stores would close down because of how easy it would be to grow outdoor or get it from someone else at the drop of a hat. Personally and opinionly indoor is much better quality.

 

[elito]

I'm with you, there has to be an answer out there for us. Hopefully someone at IC can point us in the right direction. I have faith....



That's interesting. In regards to statistical significance, I'm very interested to know how many plants total from each method are you using to compare?

i didnt start this intentionaly to compare the results i originaly wanted to see how much growth would i get from a clone put straight to flower without veg.

On the ebb and flow table i have about 50 plants,in soil i grown perpetual or 8 months so i dont know how many plants but maybe 100-200,in this DWC i have 2,now im gonna make a DWC table and put 6-10 dual pumps in it to see how that works,if they turn out like these 2 that would be great.by the way i didnt mention these 2 plants had the EC to 3.2-3.6 for a few days and it didnt bother them now its at 2.6,all the rest i keep at 1.8 ec

 

[Cranberry]

Urban Gardener just had a article on Do levels and air stones.
I bet you had no idea that the wrong stones can rob your nutrient solution of oxygen?

 

[grapeman]

More is better but there is a limit to the amount of O2 that water can hold. It is published somewhere and I even saw it here some months back. anyway, warmer water holds less O2 and cooler water holds more O2, but there is a limit and it won't pay to try to pump more O2 into a fluid that is already saturated with O2. It's a numerical thing. You'll find the number and figure it out.

 

[intlplayr]

Urban Gardener just had a article on Do levels and air stones.
I bet you had no idea that the wrong stones can rob your nutrient solution of oxygen?

Thanks for the Urban Garden tip! Is this the article you were referring to?

Great article nonetheless...

Still searching for saturation level limit of O2 in water as Grapeman suggested...

 

[intlplayr]

At sea level and zero salinity,
that means no nutes, 68ºF water can hold 9.2 ppm DO,
while at 86.0F, saturation is at 7.6 ppm DO,
and unable to support "useful" life.(you can grow bacteria)

How to measure? with a probe: http://www.vernier.com/probes/do-bta.html

Max out DO!!! : )

 

[Surrender]

At sea level and zero salinity,
that means no nutes, 68ºF water can hold 9.2 ppm DO,
while at 86.0F, saturation is at 7.6 ppm DO,
and unable to support "useful" life.(you can grow bacteria)

How to measure? with a probe: http://www.vernier.com/probes/do-bta.html

Max out DO!!! : )

I don't think the unit you linked comes with the reader, could be wrong. That lab grade stuff is pricey! lol wow!

Here's one for aquariums that should work just fine iirc the aquarium guys shoot for over 6ppm for their plants.

Milwaukee makes one too.

Oxygen is more soluble in water than nitrogen; water contains approximately 1 molecule of O2 for every 2 molecules of N2, compared to an atmospheric ratio of approximately 1:4. The solubility of oxygen in water is temperature-dependent, and about twice as much (14.6 mg·L−1) dissolves at 0 °C than at 20 °C (7.6 mg·L−1).[25][26] At 25 °C and 1 standard atmosphere (101.3 kPa) of air, freshwater contains about 6.04 milliliters (mL) of oxygen per liter, whereas seawater contains about 4.95 mL per liter.[27] At 5 °C the solubility increases to 9.0 mL (50% more than at 25 °C) per liter for water and 7.2 mL (45% more) per liter for sea water.

 

[intlplayr]

Nice call! +rep