Why do people still grow with NFT?

[Gandalfalfa]

Yeah I’ve read that happens with high CO2. The stomata get lazy because of the high CO2. CO2 interferes with abscisic acid signalling. This signal controls the opening (turgid) and closing (flaccid) of the stomata

 

[Rosenberg]

What about if you gave cannabis Viagra for performance problems of flaccid stomata. ..someone had to say it. :D

 

[Supercharge]

Maintaining optimal levels of O2 at the root zone is a bit of a dark art. On the one hand you need the temps for cellular processes and on the other hand high temps lower DO levels. O2 is essential for providing the energy needed to pump nutes into cells.

 

[AfricanHaze]

Plants draw nutrients in from negative pressure created at the stomata pores don’t they? So it’s not requiring energy, it’s just capillary action.

 

[Supercharge]

Both are true. Ions are actively pumped across concentration gradients but also diffuse passively via osmosis. The energy required for active transport comes from ATP as well as aerobic respiration and mediated by gated membrane bound ion channels or open channels that selectively transport chelated ions.

 

[Atlantis]

View attachment 435725

View attachment 435726

Not really NFT, just wanted to share the awesome setup.

Google Images says that's "LETTUCE LEAVES: An employee planted lettuce seedlings in a vegetable plant at Granpa Farm Rikuzentakata, in Rikuzentakata City, Japan, Wednesday. Eight dome-shaped hydroponic vegetable plants operated by Granpa Farm Rikuzentakata produce 3,600 heads of lettuce a day in an area damaged by the March 2011 earthquake and tsunami. AKIO KON/BLOOMBERG NEWS"
It's not letting me post the link, but do a reverse image search and you'll see it link back to the Wall St Journal.
Super cool!

 

[DonPalermo]

I'm very very confused now. In my country, we are so dumb and obiviously retarded, that we thinks that nft is one of the best systems for cannabis farming. Lots of oxygen for roots, very simple and easy to maintenance. Yields are beter than any other system. Well, not better than true high pressure aerosystems, but near.
Imho I havent seen any reason in this thread to change system. If you can keep your water temperature in 18 celsius, you have to be wizard for failing your grow.
I sincerely want grow my cash crop so fast and so much as possible. And me thinks its Gt100.

 

[DonPalermo]

Hmm. I didnt mean to literally rage, only tryed to be sarcastic. English isnt my first language, not even second.

What I tryed to say is, as far as I know, nft is very good system for cannabis growing. Even commercial growing. Very simple, silent, fast grow, good yield. Easy system.

 

[Tbc]

Just wondering why people still use NFT? Water and nutrient uptake are affected by DO levels at the root zone, which is controlled by various metabolic processes that are influenced by environment. NFT is one of the poorest techniques at providing sufficient DO as the accumulation of layered root masses inhibit gas exchange. I know some growers try to mitigate this issue by modifying the depth and shape of the trough, but inevitably the exit drain of the trough will have less DO than the delivery creating an imbalance within your crop. One of the best ways to promote high cannabis yields is focusing on consistency, and high yields are a function of good cannabis husbandry...and I really don't think NFT falls into that category.

I am not being funny honestly but have you ever grown in nft I have for nearly 20 years and I get very very high yields of top top drawer bin o my using led for year but that's a different story not meaning go offend just don't get way your on about and I've tried most except areoponics

 

[Tbc]

Hmm. I didnt mean to literally rage, only tryed to be sarcastic. English isnt my first language, not even second.

What I tryed to say is, as far as I know, nft is very good system for cannabis growing. Even commercial growing. Very simple, silent, fast grow, good yield. Easy system.

Don p you sir are correct the other guy????

 

[RFT]

Just because some people fail at a method does not mean it can't be done! Just think what the world would be like if every time someone pronounced they had tried something and it didn't work, the rest of us simply agreed and moved on.
As an example, about 25 years ago, I had a very famous PhD, author, and self proclaimed "Expert" in all things hydroponic in one of my commercial greenhouses telling me that they had tried growing tomatoes and cucumbers in an NFT system in the "lab" and it simply didn't work and that he published that information in his last book. While he was telling me this, he was eating a tomato off of one of over 1000 plants I had growing in a large scale NFT system. My response to him was simply "good thing I didn't read your book before I built this greenhouse then".
I have grown countless different types of plants in NFT systems over the last 30 years without having DO in the root system be a problem. I still have peppers, melons, basil, lettuce, and tomatoes growing out of vinyl rain gutters on the side wall of my greenhouse and they produce enough each year to cover my operating expenses for the entire building.
There is a higher risk of problems with NFT in that if a pump quits or reservoir runs dry and no one is there at the time, you stand a good chance on loosing all your plants but there are also backup systems or alarms that can easily be built into the system to keep from having major disasters.

Are you still a member of this forum? I’d love to pick your brain.

 

[RFT]

I am not being funny honestly but have you ever grown in nft I have for nearly 20 years and I get very very high yields of top top drawer bin o my using led for year but that's a different story not meaning go offend just don't get way your on about and I've tried most except areoponics

I’d love to pick your brain on this topic.