Which would produce more DO in a DWC?

JSB99 said:

"Medicinal Fried Chicken" i

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putting his nuts in the microwave was classic.

i'm actually only an hour from south park/ fairplay colorado.

duh! how'd i not notice that?? oops. i was too busy looking at the 2 liter sized cola.
i still think the best tv is south park, seinfeld, family guy, simpsons, american dad. hahaha.

rkymtnman said:

putting his nuts in the microwave was classic.

i'm actually only an hour from south park/ fairplay colorado.

duh! how'd i not notice that?? oops. i was too busy looking at the 2 liter sized cola.
i still think the best tv is south park, seinfeld, family guy, simpsons, american dad. hahaha.

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All good shows

rkymtnman said:

...i was too busy looking at the 2 liter sized cola.

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Those are actually 2 different colas during the same grow. I had to fight to keep them below the light. Super Silver Haze is my kryptonite. Knocks me on my ass harder than any other! Really hard to control height growing inside though.

I'd be up for the challenge again though

JSB99 said:

I might not have said that correctly. Compressed air is warmer, but as it decompresses, it chills (think of a refrigerator compressor). This is just a theory though. You may be right.

I created a waterfall that jets multiple streams into the controller, but I didn't want to rely on that being the only producer of DO. It may be overkill, but as stated multiple times by many people, "You cannot go large enough on an air pump."

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I used an air chiller you hook to compressed air in the machine shop that'll frost over most metals. We used it for cooling cutting tools. It's called a vortex tube, they're petty cool.

https://en.m.wikipedia.org/wiki/Vortex_tube

I've thought about using one too cool, I have 200gal of air in my garage, I just don't know if running my compressor to maintain would be more efficient than a chiller.

Air always comes out of a compressor hot. It's the same principle that diesel engines use to work. They compress a volume of air 16 - 20X so it heats up enough to ignite the fine mist of fuel injected into the cylinder at it's peak compression. If your nutes are chilled then the heat from the air won't be enough to make any real difference but in an uncooled system could add a couple degrees to the load.

Routing the air through copper tubing to the splitter could cool it a bit but hardly enough to make a difference I would think. A chiller of some kind is best overall to keep nutes at a nice steady temp.

When I construct my new grow space I'll build it so that incoming air flows across the floor space along the length of it and keep the tubs cooler before it gets mixed in with the ambient air the plants live in. I'm pretty sure it'll work well enough that I won't need to use a chiller for 4 x 50L tubs.

Was in the city today and shopped for titanium white paint to do my grow room rather than use panda film but couldn't find any. I guess I'll just use the panda as I've had a roll of it sitting here for 5 years.

When trying and hoping to insuring minimal safe oxygenation, then the element O2 is the point. There often many problems trying to insure enough oxygen O2 using air, ambient air (water falls), compressed air, air venture, air pumps, air bubblers, hot air bubbles, cold air bubbles…

Limited by air, jewelers and plumbers torched would not produce enough heat, welders can't cut iron, rockets can't escape gravity, patients would die in hospitals without pure 100% oxygen, fighter pilots could not fly, climbers could not crest Mt. Everest although the ambient O2 at the crest is also slightly less than 21% O2 too.

Why? Because when oxygen O2 is the point the limiting factor of using air is air containg very little oxygen O2 which is always less than 20% O2.

FACT: Mother Nature has got you by el cahones!

Doesn’t matter how much air you pump or bubble or blow because ambient air contains less than 21% O2 (hot air or cold air makes no difference, the O2 % is constant and fixed. If oxygen O2 is the point of the exercise, then all the 80% Nitrogen gas you’re pumping with your big air pumps can suffocate root balls and Bennies or people too. Root ball suffocation causes root death and root rot inviting fungal outbreaks that happen from time to time in DWC pot grows. All this carelessly caused by low oxygen in the rez water. This is not caused by "low air" you know.

So buying bigger air pumps and pump more does what?

Thinking scientifically and soberly, well, that will add more air.

Stoned-out thinking while in a drugged stupor, well, more adding more air will add more oxygen (O2) because air and elemental oxygen (O2) are the same gas aren't they.

Do the math and see - Pump 400% more air with a jumbo air pump and that will make 100% oxygen because air is 1/5 pure oxygen and 4/5 pure Nitrogen

J Henry said:

When trying and hoping to insuring minimal safe oxygenation, then the element O2 is the point. There often many problems trying to insure enough oxygen O2 using air, ambient air (water falls), compressed air, air venture, air pumps, air bubblers, hot air bubbles, cold air bubbles…

Limited by air, jewelers and plumbers torched would not produce enough heat, welders can't cut iron, rockets can't escape gravity, patients would die in hospitals without pure 100% oxygen, fighter pilots could not fly, climbers could not crest Mt. Everest although the ambient O2 at the crest is also slightly less than 21% O2 too.

Why? Because when oxygen O2 is the point the limiting factor of using air is air containg very little oxygen O2 which is always less than 20% O2.

FACT: Mother Nature has got you by el cahones!

Doesn’t matter how much air you pump or bubble or blow because ambient air contains less than 21% O2 (hot air or cold air makes no difference, the O2 % is constant and fixed. If oxygen O2 is the point of the exercise, then all the 80% Nitrogen gas you’re pumping with your big air pumps can suffocate root balls and Bennies or people too. Root ball suffocation causes root death and root rot inviting fungal outbreaks that happen from time to time in DWC pot grows. All this carelessly caused by low oxygen in the rez water. This is not caused by "low air" you know.

So buying bigger air pumps and pump more does what?

Thinking scientifically and soberly, well, that will add more air.

Stoned-out thinking while in a drugged stupor, well, more adding more air will add more oxygen (O2) because air and elemental oxygen (O2) are the same gas aren't they.

Do the math and see - Pump 400% more air with a jumbo air pump and that will make 100% oxygen because air is 1/5 pure oxygen and 4/5 pure Nitrogen

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I don't care about the repercussions, it's now my mission to rid this forum, and hopefully the earth, of your bullshit.

GO FUCKING KILL YOURSELF. DRINK BLEACH, STAB AN OUTLET WITH A FORK, THEN SUCK START A SHOTGUN. Is that clear enough?

A Freak us really scary.... no?

J Henry said:

Stoned-out thinking while in a drugged stupor,

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and yet we are still smart enough to realize that O2Grow products are overpriced pieces of shit. if they really worked, EVERY commercial hydroponics grower would use them.

another fail on this thread Biff Loman.

J Henry is there any chance you can actually post a link of your cannabis grow using the product you keep talking about, if you can't provide that then I think it's time for you to fuck off in a nice way.

zypheruk said:

J Henry is there any chance you can actually post a link of your cannabis grow using the product you keep talking about, if you can't provide that then I think it's time for you to fuck off in a nice way.

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he doesn't grow. and he makes fun of stoners.

yet he's the dumbass who actually uses his real name on a cannabis growing site.

Well, he is almost correct about oxygen levels tho off a wee bit. Air at sea level is about 21% O2, 78% N with the rest being water vapour, Argon, CO2 and traces of everything else. Once water is saturated with air the only way to increase the O2 level is to use air that has a higher percentage of O2 to displace the N and other gases.

I've often thought about doing that by keeping the air pump in a box that I feed oxygen into from a welding tank at a measured rate with a flow gauge. Initial cost is high to buy/rent the tank of O2 but a full tank should last for a long time as long as one is careful about metering it out properly.

I used to use one 12" airstone with a small pump for each tub then after a pump failure started using a dual outlet pump and two stones for redundancy in case one side failed I would always have at least one running. A dual outlet aquarium air pump has two separate pumps so one can fail while the other one still pumps fine. When running two tubs I'd have one line from each dual outlet pump going to each tub and each pump plugged into a different circuit in case a breaker blew at least one pump would still supply air to one stone in each tub. In the event of a power failure lasting longer than a day I'd stir in some 35% food grade hydrogen peroxide. I did that for a week once and the plants survived just fine tho it taught me to pay the f'n electric bill before they cut me off.

OldMedUser said:

I've often thought about doing that by keeping the air pump in a box that I feed oxygen into from a welding tank at a measured rate with a flow gauge. Initial cost is high to buy/rent the tank of O2 but a full tank should last for a long time as long as one is careful about metering it out properly.

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here's what i think the problem will be with that idea.

it will oversaturate your grow area with O2 and slow down photosynthesis because of even less CO2 in the grow area.
if you could isolate your res from the grow area, it should work.

All the O2 would go thru the airstones and wouldn't make one bit of difference to the air the plants breathe. I'm talking about adding a metered amount of O2 to the air pump not flooding the room with it.

Try thinking before you type once in a while.

OldMedUser said:

All the O2 would go thru the airstones and wouldn't make one bit of difference to the air the plants breathe. I'm talking about adding a metered amount of O2 to the air pump not flooding the room with it.

Try thinking before you type once in a while.

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how wouldn't it affect the grow room air? if the roots don't use the excess O2, any extra saturates teh grow room.

ps. you aren't very smart are you?

What part of metering the O2 don't you get?

The little that goes into the air won't affect the CO2 levels enough to make any difference at all.

It's like thinking that my sitting in the grow room will produce enough CO2 to help the plants grow faster.

I don't know why, but I just got this idea that J Henry should fart into a 2L bottle, (shove it past sphincter for a tight seal of course) then quickly put it to his nose and inhale deeply.

JSB99 said:

So just having a waterfall is enough so that you don't need airstones? Wow!

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Yes, definitely. The higher the drop the better.

OldMedUser said:

The little that goes into the air won't affect the CO2 levels enough to make any difference at all.

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then the little bit extra you are adding to the roots won't make any difference at all.

so your big idea is to add O2 so that the air into the airpump is 21.5% instead of 21%?? wow. earthshaking theory.

Well fuck it. Let's introduce some actual science about supersaturation.
From wiki:
https://en.m.wikipedia.org/wiki/Oxygen_saturation
https://en.m.wikipedia.org/wiki/Supersaturation

Oxygen saturation

Measuring the dissolved oxygen through a multi-parameter photometer
Oxygen saturation (symbol SO2) is a relative measure of the concentration of oxygen that is dissolved or carried in a given medium as a proportion of the maximal concentration that can be dissolved in that medium. It can be measured with a dissolved oxygen probe such as an oxygen sensor or an optode in liquid media, usually water. The standard unit of oxygen saturation is percent (%).

It is possible for stagnant water to become somewhat supersaturated with oxygen (i.e. reach more than 100% saturation) either because of the presence of photosynthetic aquatic oxygen producers or because of a slow equilibration after a change of atmospheric conditions.[2]

Supersaturation

Supersaturation is a state of a solution that contains more of the dissolved material than could be dissolved by the solventunder normal circumstances. It can also refer to a vapor of a compound that has a higher (partial) pressure than the vapor pressure of that compound.

Koi raising website:
http://smartkoi.com/Science/Supersaturation/supersaturation.html

Water contains Nitrogen, Oxygen, Carbon dioxide and other gases. Total Pressure of these dissolved gases is equal to the sum of partial pressures of all gases dissolved in water.

PTDG = pO2 + pN2 + pCO2 + pH2O + p…

Where:

PTDG = Total Dissolved Gas Pressure
pO2 = partial pressure of Oxygen
pN2 = partial pressure of Nitrogen
pCO2 = partial pressure of Carbon dioxide
pH2O = partial pressure of water vapor
p … = partial pressure of all other dissolved gases like hydrogen sulfide and methane

The total amount of gas dissolved in water = The difference between sum of partial pressure of all gases in air or Barometric pressure and sum of partial pressure of all gases in water. This can also be written as Percent saturation of the gases in water.

or PTDG(%) = (PTDG / PBP) x 100

where PTDG(%) = Total Gas Pressure expressed as percent saturation
PBP = Barometric Pressure at water surface

When the partial pressure of a gas in water equals to its partial pressure in the air, there is no net movement from air to water or vice versa. Then, the gases in air are said to be in equilibrium with the dissolved gases in the water is in equilibrium with air:

If the partial pressure of a gas in water is less than its partial pressure in the air, then the water is under-saturated. So, that gas will move from air to water.

If the partial pressure of a gas is less in the air than its partial pressure in water, then water is supersaturated with that gas. The gas will diffuse from water to atmosphere.

It is possible for water to be under-saturated with one gas but supersaturated with another..

In supersaturated water, the gases that are supersaturated are always diffusing into the atmosphere in the form of bubbles.

Photosynthetic O2 producing bacteria in stagnant water. Maybe that's the key to organic hydro, stagnant res with that bacteria for O2 production?

Interesting.....