Not done with you yet.
Do you know anything about how HPA works? It's a closed system, solution under pressure, which is released in < 1 second bursts. The resultant mist floats in the closed root chamber so where does the O2 come from? The chamber? Sooner or later that oxygen will be used up. And yet, HPA root hairs are unique: they look like volleyball- basketball size cotton candy, offering PHENOMENALLY more surface area for nutrient uptake when it is provided at ~ 20-50 microns. And having done 4 grows with it is what finally gave me idea to incorporate HPA mist heads onto a low pressure pump, which provided amazingly better root system than any bubbler ever could. Did you ever think of it? NO.
Again, you don't understand a system.
Do you really think that there will get no oxygen in the chamber?
Of course there will. And even it is just a little opening, it will be more then enough.
Because you don't know numbers and science, I will explain it to you. All for free.
A cubic meter of air holds 1,430,000 mg of oxygen.
Roots use 200 mg of oxygen per kilo of roots per hour.
So if there would be 1 kilo of roots in your chamber, and your chamber would be 1 cubic meter, there would be enough oxygen for your roots for 7,150 hours. That are almost 300 days.
Of course your chamber would be perhaps smaller and your rootball heavier.
But even with a chamber that is 4 times smaller, there will be enougg oxygen for 75 days. That is if your chamber is tightly sealed.
But your rootchamber can never be totally sealed. There will for exampe always slip air through where the stem is in your netpot.
So air will be flowing in all the time. If it is just 10 percent of new air every day, it means that in a room chamber of 1 cubic meter, it would be 143,000 mg of new oxygen per day.
If you would have 10 kilos of roots in a chamber of 1 cubic meter, that would mean you only need oxygen in the amount of 10 kilo roots x 200 mg x 24 hours = 48,000 mg. So more then enough.
So, you don't understand how and why your system works as it does.
Of course you can say it is only knowledge from books, but these are scientific facts.
Perhaps you belong to the group of people who say that the earth is not a ball, because it is knowledge from the books.
BTW, HPA does not need totally closed chambers.
I visit commercial greenhouses and see it used in open greenhouses as well.
Most of them just hang some plastic flaps so the air flows not away right away.
Or they have a sub-chamber in their huge greenhouse.
And I agree with you that HPA gives great roots, perhaps the best from all hydro systems.
But in your crazy rage you probably overread that.
Experimenting/thinking outside the box is how science and chemistry advances, not by being close minded, relying on antiquated studies
Studies are not antiquated. Why the fuck do you think people came up with HPA?
Knowing that plants in a moist enviroment, surrounded by oxygen in a gaseous form will perform great. No biologist, hydro-expert or horticultural grower ever said that it was nonsense.
HPA roots blow away what harvested roots look like from conventional F & D with typical DO
F & D does not rely on DO, but you don't get that. F & D is a system that is based on oxygen in gaeous form.
If you wanted more and better roots, you could perhaps flood with a higher interval.
That way your roots would stay moist for longer, and as we know ''moist plus oxygen in gaseous state is perfect.'' The same as with HPA, LPA and those funny foggers (only for clones)
For someone who likes thinking out of the box and experimenting, you should open your eyes how the roots work.
Not stick what some old growers who don't understand the difference between DO and oxygen in gaseous form once taught you.
To state you are not convinced, ok, BUT, to argue, and argue and argue that the O2grow wil not perform better without ever having tried it is IMHO beyond ridiculous
I am not trying it out, for several legitimate reasons.
- It is way to expensive.
- I think there is a danger of bringing toxic metals in your reservoir
- Plants don't need a DO of 13 mg per liter anyway, so why do it?
- I don't get the 3 hours per day system.
Every year I see several wonder-products that promise 10 or 20 percent higher yields.
I doubt most of them and in the long run I saw them almost all disappear.
This company is around for some time, and still it all looks like snake oil.
But hey, I could be wrong, so you prove me right.
Now I have heard that you are a lousy grower anyway, so when you have a higher yield, it can also be luck.
YAHOOOOOOOO
Bye bye
Now we've got hydrogen farts?... That's a step up, odorless farts..
