Cannabis and o2 in the rootzone

[Aqua Man]

So it would work for me, sterile.

Sweet

I don’t think so. Because the ozone needs to react with something to break down I believe. So i just dont see it as feasible when compared to an o2 concentrator. Ozone is freaking dangerous stuff guys. Its not something i would ever consider unless it is contained

 

[Aqua Man]

@Aqua Man

We need to find a balance, the perfect balance for how cold for maximum growth and how cold for maximum DO saturation.

72-74f if you have ideal aeration. With elevated o2 higher… probably around 78-80f by the research i have done

 

[Observer]

W

But it wont stay in the water if the gasses above the water are at atmospheric levels… its more complicated than one may think. I have looked at all sources of o2 in my hunt when i first considered attempting to raise o2 levels

So a pressurized chamber.

 

[Aqua Man]

Does air pressure have anything to do with dissolves O2 levels in water? This is what I'm getting from your responses. What I'm also understanding is that if the O2 level in water is higher than in the atmosphere the O2 will escape into the atmosphere until equilibrium has been achieved between the two unless you're able to shield the enriched O2 in a chamber that keeps atmospheric levels of O2 from equalizing?

Pressure does but it’s negligible in this case

 

[Observer]

I don’t think so. Because the ozone needs to react with something to break down I believe. So i just dont see it as feasible when compared to an o2 concentrator. Ozone is freaking dangerous stuff guys. Its not something i would ever consider unless it is contained

Because highly reactive oxygen?

Ok thanks guys, learning...

 

[Aqua Man]

I cant state my opinion on ozone enough… shit is just plain dangerous and i do NOT recommend it

 

[Amnesia]

Does air pressure have anything to do with dissolves O2 levels in water?

It's all about pressure and temperature.

I cant state my opinion on ozone enough… shit is just plain dangerous and i do NOT recommend it

The article pertains to greenhouse growing, so I suspect the use of O3 might be more appealing to large-scale, commercial greenhouse growing operations that have lots of $$$ to spend on the required equipment. It certainly wouldn't apply to a simple organic soil grower like me.

I'm wondering if a simple aquarium air pump would work to add atmospheric O2 to my irrigation water. Would something like this help to increase the DO?

 

[Aqua Man]

It's all about pressure and temperature.


The article pertains to greenhouse growing, so I suspect the use of O3 might be more appealing to large-scale, commercial greenhouse growing operations that have lots of $$$ to spend on the required equipment. It certainly wouldn't apply to a simple organic soil grower like me.

I'm wondering if a simple aquarium air pump would work to add atmospheric O2 to my irrigation water. Would something like this help to increase the DO?

View attachment 11695

It can help replenish o2 but i dont think its going to do much if anything unless you have water sitting with a biofilm for some time. The challenges of o2 are keeping it replenished in the root zone

 

[Amnesia]

It can help replenish o2 but i dont think its going to do much if anything unless you have water sitting with a biofilm for some time. The challenges of o2 are keeping it replenished in the root zone

Makes sense. I've noticed that my plants wilt slightly and sometimes show signs of N toxicity after watering. It usually goes away within a day. That's what had me wondering about O2 in the water. Now I'm wondering how much pumping air into the bottom of the fabric pots would improve upon simply circulating air at pot level. It might not be much.

 

[Aqua Man]

Makes sense. I've noticed that my plants wilt slightly and sometimes show signs of N toxicity after watering. It usually goes away within a day. That's what had me wondering about O2 in the water. Now I'm wondering how much pumping air into the bottom of the fabric pots would improve upon simply circulating air at pot level. It might not be much.

What kinda water temps are you giving them?

 

[Observer]

It's all about pressure and temperature.


The article pertains to greenhouse growing, so I suspect the use of O3 might be more appealing to large-scale, commercial greenhouse growing operations that have lots of $$$ to spend on the required equipment. It certainly wouldn't apply to a simple organic soil grower like me.

I'm wondering if a simple aquarium air pump would work to add atmospheric O2 to my irrigation water. Would something like this help to increase the DO?

View attachment 11695

You just need to bubble the surface water

 

[Aqua Man]

You just need to bubble the surface water

Kinda and need some water mixing so if an airstone is at the bottom it will provide both

 

[Rootsruler]

Kinda and need some water mixing so if an airstone is at the bottom it will provide both

Would a small solar fountain in the res dissolve oxygen as efficiently as an airstone?

 

[Aqua Man]

Would a small solar fountain in the res dissolve oxygen as efficiently as an airstone?

It all depends on the load (how much is being used). The bubbles dont provide o2 its the surface agitation. There is not enough dwell time or pressure for bubbles to do much other than create surface agitation.

 

[Observer]

It all depends on the load (how much is being used). The bubbles dont provide o2 its the surface agitation. There is not enough dwell time or pressure for bubbles to do much other than create surface agitation.

Yea

That paper stated the more the better and the smaller bubbles, sink down more supposedly allowing more o2/atmosphere mixture and surface area & what not.

 

[Aqua Man]

Yea

That paper stated the more the better and the smaller bubbles, sink down more supposedly allowing more o2/atmosphere mixture and surface area & what not.

Kinda but only to equilibrium honestly bubble size has a lot to do with surface agitation and i do agree smaller is better. But the bubbles in the water lack the pressure needed to force o2 into the water. O2 is also a hard gas to dissolve in water much much much more so than co2 and i have a LOT of experience doing that. I can tell you that supersaturation of o2 is extremely difficult to achieve and maintain.

The microbubbles that some of this tech uses tricks DO sensors into counting bubbles as dissolved and that just not the case.

The only really effective way for our use is to create an o2 rich area above the water. Extremely effective for fogponics because the surface area to water volume ratio is extremely high and even more so with aeroponics.

For soil and peat it will need to be pushed into the media and hydro good mixing with a high o2 level at the water surface

 

[Amnesia]

What kinda water temps are you giving them?

Room temperature. The air temperature is 76º in the room. I usually fill my watering cans after each use. So, they sit for two or more days before the water is used.

Kinda and need some water mixing so if an airstone is at the bottom it will provide both

That's what I was thinking. The article said that smaller bubbles are better, so that would call for an air stone. Contact time might matter, too, so I was thinking of a long, vertical tube with an air stone at the bottom. I'd probably start with some air stones in the watering cans, though.

 

[Observer]

Kinda but only to equilibrium honestly bubble size has a lot to do with surface agitation and i do agree smaller is better. But the bubbles in the water lack the pressure needed to force o2 into the water. O2 is also a hard gas to dissolve in water much much much more so than co2 and i have a LOT of experience doing that. I can tell you that supersaturation of o2 is extremely difficult to achieve and maintain.

The microbubbles that some of this tech uses tricks DO sensors into counting bubbles as dissolved and that just not the case.

The only really effective way for our use is to create an o2 rich area above the water. Extremely effective for fogponics because the surface area to water volume ratio is extremely high and even more so with aeroponics.

For soil and peat it will need to be pushed into the media and hydro good mixing with a high o2 level at the water surface

Thanks Aquaman

 

[Observer]

@Aqua
@Moe.Red

have either of you played with Liquid oxygen?

it seems expensive and probably not worth it, best method probably is the o2 concentrator.....or oxygen gas tanks but that has its risk.

thought id ask.

 

[Aqua Man]

@Aqua
@Moe.Red

have either of you played with Liquid oxygen?

it seems expensive and probably not worth it, best method probably is the o2 concentrator.....or oxygen gas tanks but that has its risk.

thought id ask.

Whacha mean by liquid o2?

 

[moe.red]

I think there are 2 kinds of liquid O2.

There are gels that deep sea divers use - never seen one up close.
There is liquid O2 - frozen in bottles.

I have not looked into either one. I can't imagine the cost and safety as well as the equipment needed to use this is worth it for cannabis. Maybe in space.

 

[Pipecarver]

Well i have this idea that using fabric pots in a pail with an airstone or o2 concentrator underneath will greatly improve your gas exchange and o2 levels. A rack would be placed in the pail to set the bags on and the lips of the bags folded over the rim of the pail so the air pump s in will be forced into the media and vent through the soil. This would best be done with a breathable media like peat or coco with perlite

Could you use clay balls on the bottom to cover a net pot and air stone with a line up the inside of the fabric pot. a light mix of 50/50 perlite soil/coco?

 

[Amnesia]

Could you use clay balls on the bottom to cover a net pot and air stone with a line up the inside of the fabric pot. a light mix of 50/50 perlite soil/coco?

I had similar thoughts. It seems the delivery mechanism isn't as big a challenge as the source of the oxygen.

 

[Aqua Man]

Could you use clay balls on the bottom to cover a net pot and air stone with a line up the inside of the fabric pot. a light mix of 50/50 perlite soil/coco?

You probably could but need to watch the media and flow of air as to not dry it out to fast

 

[Pipecarver]

You probably could but need to watch the media and flow of air as to not dry it out to fast

yes, that maybe why they can be used in the auto pots with water available 24/7. Probably not good to dry out the roots first then, with air drying from the bottom up....

 

[Aqua Man]

yes, that maybe why they can be used in the auto pots with water available 24/7. Probably not good to dry out the roots first then, with air drying from the bottom up....

Yeah you can do that by regulating the flow. It wont take much to really improve the gas exchange. There are several way to accomplish this and if you want to try i can give you my thoughts on a few if you like

 

[Pipecarver]

hey, thanks but don't go to any extra work on it. I'm using air in the auto pots and it may have been my mix that gave me different results. 2 pots may have had too heavy a mix, not allowing the air up into the root zone. I've a much lighter mix this time around and i was careful at how many clay balls were laid down , I just covered the net pots/domes then the lighter mix all around....

If I can control the Humidity, i'm sticking with the new pots. I like the ease of feed and the overall health in the plants.

 

[Max]

I used to spend 30 min in my sealed room and the ppm would go from the setpoint of 1200ppm to 2400ppm. Overnight it could reach as high as almost 3k but once the lights came on it wasn’t 30 min before the tank was kicking back on. Alot of variables there but yeah

B good to know your oxygen levels overnight.when your not exchanging for fresh oxygen.do you think plant would benefit from that.just overnight and shutting back off through the day.

 

[Aqua Man]

B good to know your oxygen levels overnight.when your not exchanging for fresh oxygen.do you think plant would benefit from that.

It’s beneficial 24hrs a day unlike co2 in the atmosphere is only beneficial during lights on

 

[Anthem275]

It’s beneficial 24hrs a day unlike co2 in the atmosphere is only beneficial during lights on

How should I do it in a flood and drain setup?