Who's talking about, or has "pure oxygen"?
... If the air is in need of being exchanged, you'd need to replace all the air since, all any of us have is regular old air to put in its place.
If the only gas the roots utilize it o2, then that's all that needs replacing. The rest is just viewed as a "mixer" to the roots as long as it doesn't contain voc's or toxic gas.
You know what your system pumps out a cycle I'm sure, so do the math, no offense but i have, and you're wasting time till you do as well. Even if your misters blew 100% air you wouldn't even scratch the surface of exchanging the volume of air in only a 5gal root container.
Like I said, I don't see a need to exchange all of the air, just the oxygen replenished as the roots utilize it. Why you seem to see it different baffles me.
You suppose eh?..... well then i suppose you should realize it doesn't matter one bit if something is hermetically sealed or not, a 5gal bucket with a lid on it is not getting fresh oxygen in it and you know that. I really don't get why you'd play devils advocate here.
Well, I am using words like "suppose" because I want to admit I do not know for sure, I believe my thinking is sound, but my mind is open if you can show me otherwise.
You doubt,.. you suppose,.. why don't you come with facts like i posted links to. Which i don't think you took the time to read and comprehend or you would know that roots get 99% of there oxygen from the immediate air around them.
Understood, but because "they get 99%" doesn't give any reference to how much that amount actually is. Perhaps we should try to find out, or do some of our own testing. The reason aero helps, is that the roots aren't sealed up with a layer of fluid, so the oxygen that is in the chamber is more available to them. Don't forget, plants evolved in the soil, so how much do you think they're really getting in there? Some for sure, but I doubt immersing them in 100% oxygen will benefit them in a way they can use.
...and how is it accessible in a shut 5gal bucket for 4 months?
Air moves through small cracks, the mist itself displaces a certain volume- as you mentioned, and as you know, water is made of 2 hydrogen atoms, and one oxygen, so in theory, it is 1/3 pure oxygen. If the atomic bond ever breaks, and some o2 is liberated, I am not sure, but we do know that water is capable of carrying some levels of pure oxygen that is likely freed in the misting. It might just be enough to supplement all of the plants requirements to maximum potential, but again, I do not know. Why don't we try to find out.
Sorry, wrong again. But if 'bubbleponics' (or DWC as its really called) supplies a plant roots with all the oxygen it needs, then why'd you go aero?.. The point of this concept is obviously go past what plants can do normally.
It seems your trying to take me quite literally, the point is that bubbleponics can grow plants, and an aero chamber probably supplies alot more o2 by the very nature of it(no I haven't measured it). I am not saying you're wrong, as you seem to like to say it to me, but i am trying to offer my thoughts and observations, along with my own thinking and theory. So far you haven't presented any proof that I see to back up your argument, so right now were just 2 guys talking about what we "think". I don't mean to come across as if your theory is wrong, just saying I do believe that plants in aero chambers get a very adequate amount of oxygen to the roots, whether this can be taken to the next level, is interesting, and I am willing to explore the idea.
If you pump air in you're going to fill your grow room with high RH, and probably a little smelly air, which we all know is not good for THC production levels. If done right air should be sucked from the buckets, treated with a carbon filter, and removed from the grow space entirely.
I don't know anything about "smelly" air hindering thc production, enlighten me. I grow outdoors, so none of this applies to my situation. Of course there are always more details in how to best do something, but I was only proposing an idea of how to make sure there is a small amount of air exchange that wouldn't hair-dry the roots.
people have success in soil too, i don't se you tossing out your precious acc, lol