The best advice for NFT

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Bulls
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The best advice for NFT

Post by Bulls » Mon Aug 20, 2018 3:46 pm

If you never heard of NFT you should know that this is probably one of the best growing methods. It's so easy to maintain that's why it's used from commercial growers to grow lots of different plants. There are also only sever important things you should remember about it..:

1. Don't Layer Up Your Spreader Mat !!!


Spreader mats are used to spread water evenly across all channels. More than one layer will slow the water flow and restrict root growth


2. Position Your Cubes Properly !!!


You'll notice some grooves at the bottom of your Grodan cubes. Make sure that you line them up with the flow of water. Roots will then grow along the planting channels.

3. Make Sure No Light Reaches Your Roots
If any light reaches your roots, algae can start growing.

It’ll compete with your roots for oxygen, warm your roots and cause all kinds of other problems.

To prevent this from happening, make sure that no light can leak past your Correx cover. You can replace your Correx cover whenever you need to.
4. Never Turn Off Your Feed Pump
NFT systems are designed to run for 24 hours a day, to keep your roots wet.

If you turn it off, your root tips will quickly dry. You’ll end up with lots of cell damage and dead root mass. Your plants will also begin to wilt very quickly.

When you turn your pump back on, you’ll be flooding dead material with your nutrient solution. This can lead to root diseases and Pythium taking hold - just look at the picture of roots - you don't want that to happen.

Rather than turning your pump off completely, to regulate your flow, turn it down to a trickle when plants have just been transplanted. You can then slowly turn the water flow up when plants are rooting well.

It may be worth buying a spare pump in case the one you've got fails.
5. Establish Plants Before Adding Them To Your NFT System
Introduce plants to your NFT system too soon and they'll be too small to cope with the intensity.

Also, if your roots aren't developed enough, your rockwool blocks will soak up too much water, leading to over saturation - some plants never recover from this.

To prevent this, before transplanting to your NFT system, establish plants and air prune roots in 3 - 4" Grodan Rockwool Transplanting Cubes, placed on a mesh shelf.

When roots begin to emerge out the bottom of your rockwool cubes, they hit the air. The root tip dries, forward growth stops and roots start branching off inside the block. Plants will develop a bigger, healthier, more efficient root network.

You know you've got a good root base when lots of root are poking out the bottom of your rockwool block, like tiny little teeth.

At this point, you can transplant them to your NFT system - they'll take to it much faster, and there will a much lower risk of over-saturation.

When you establish plants, you’ll also need to use a propagation light – a 2 tube T5 propagation light or CFL in a propagation tent is a good option.

6. If Aerating Your Nutrient Solution...

In NFT systems, your nutrient solution is already very aerated (thanks to the pump). If you need to aerate your tank as well, make sure that:

A) YOU'RE USING THE RIGHT NUTRIENT SOLUTION
Some feeds aren’t designed to be aerated – nutrients will precipitate out of your solution, at which point they’re no longer available to your plants.

AVOID anything that uses organic ingredients, such as seaweed and molasses.

These kinds of products are biologically active and don’t respond well to the oxygen in your nutrient solution - they become oxygenated.

B) YOU LOWER THE STRENGTH OF YOUR FEED
All that oxygen enhances nutrient uptake. To ensure you don’t overfeed your plants, lower the strength of your nutrient solution.

The exact strength depends on what you’re growing, your environment, how hard your water is and other factors.

If you’re using filtered water, you can often go as low as 12 - 14 CF (1.2 – 1.4 EC).
7. Keep Your Nutrient Between 18oC & 20oC
The optimum temperature for your nutrient solution is 18oC- 20oC. To control your feed's temperature, I recommend using:


A nutrient thermometer
A nutrient heater
A nutrient chiller
These users thanked the author Bulls for the post (total 6):
GMO (Mon Aug 20, 2018 4:00 pm) • Wizard (Mon Aug 20, 2018 4:05 pm) • Keeno (Mon Aug 20, 2018 7:24 pm) • Nanook of the north (Mon Aug 20, 2018 9:32 pm) • Oxy (Mon Jan 07, 2019 4:11 pm) • Viz (Tue Apr 23, 2019 3:08 pm)

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Re: The best advices for NFT

Post by GMO » Mon Aug 20, 2018 4:00 pm

Another awesome write up mate. Fair play mate

Sent from my SM-G900F using Tapatalk

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Re: The best advices for NFT

Post by Keeno » Mon Aug 20, 2018 7:25 pm

Very nice topic Bulls, I have a couple of NFT trays here, I'll stick with coco for now but may have a crack at some point so this will come in handy.
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Re: The best advices for NFT

Post by Nastyhabitz_ » Mon Aug 20, 2018 9:29 pm

Great info mate 👍🏽

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Re: The best advices for NFT

Post by Nastyhabitz_ » Mon Aug 20, 2018 9:32 pm

Bulls wrote:
Mon Aug 20, 2018 3:46 pm
If you never heard of NFT you should know that this is probably one of the best growing methods. It's so easy to maintain that's why it's used from commercial growers to grow lots of different plants. There are also only sever important things you should remember about it..:

1. Don't Layer Up Your Spreader Mat !!!


Spreader mats are used to spread water evenly across all channels. More than one layer will slow the water flow and restrict root growth


2. Position Your Cubes Properly !!!


You'll notice some grooves at the bottom of your Grodan cubes. Make sure that you line them up with the flow of water. Roots will then grow along the planting channels.

3. Make Sure No Light Reaches Your Roots
If any light reaches your roots, algae can start growing.

It’ll compete with your roots for oxygen, warm your roots and cause all kinds of other problems.

To prevent this from happening, make sure that no light can leak past your Correx cover. You can replace your Correx cover whenever you need to.
4. Never Turn Off Your Feed Pump
NFT systems are designed to run for 24 hours a day, to keep your roots wet.

If you turn it off, your root tips will quickly dry. You’ll end up with lots of cell damage and dead root mass. Your plants will also begin to wilt very quickly.

When you turn your pump back on, you’ll be flooding dead material with your nutrient solution. This can lead to root diseases and Pythium taking hold - just look at the picture of roots - you don't want that to happen.

Rather than turning your pump off completely, to regulate your flow, turn it down to a trickle when plants have just been transplanted. You can then slowly turn the water flow up when plants are rooting well.

It may be worth buying a spare pump in case the one you've got fails.
5. Establish Plants Before Adding Them To Your NFT System
Introduce plants to your NFT system too soon and they'll be too small to cope with the intensity.

Also, if your roots aren't developed enough, your rockwool blocks will soak up too much water, leading to over saturation - some plants never recover from this.

To prevent this, before transplanting to your NFT system, establish plants and air prune roots in 3 - 4" Grodan Rockwool Transplanting Cubes, placed on a mesh shelf.

When roots begin to emerge out the bottom of your rockwool cubes, they hit the air. The root tip dries, forward growth stops and roots start branching off inside the block. Plants will develop a bigger, healthier, more efficient root network.

You know you've got a good root base when lots of root are poking out the bottom of your rockwool block, like tiny little teeth.

At this point, you can transplant them to your NFT system - they'll take to it much faster, and there will a much lower risk of over-saturation.

When you establish plants, you’ll also need to use a propagation light – a 2 tube T5 propagation light or CFL in a propagation tent is a good option.

6. If Aerating Your Nutrient Solution...

In NFT systems, your nutrient solution is already very aerated (thanks to the pump). If you need to aerate your tank as well, make sure that:

A) YOU'RE USING THE RIGHT NUTRIENT SOLUTION
Some feeds aren’t designed to be aerated – nutrients will precipitate out of your solution, at which point they’re no longer available to your plants.

AVOID anything that uses organic ingredients, such as seaweed and molasses.

These kinds of products are biologically active and don’t respond well to the oxygen in your nutrient solution - they become oxygenated.

B) YOU LOWER THE STRENGTH OF YOUR FEED
All that oxygen enhances nutrient uptake. To ensure you don’t overfeed your plants, lower the strength of your nutrient solution.

The exact strength depends on what you’re growing, your environment, how hard your water is and other factors.

If you’re using filtered water, you can often go as low as 12 - 14 CF (1.2 – 1.4 EC).
7. Keep Your Nutrient Between 18oC & 20oC
The optimum temperature for your nutrient solution is 18oC- 20oC. To control your feed's temperature, I recommend using:


A nutrient thermometer
A nutrient heater
A nutrient chiller

Hello mate ive had my plants in rockwool cubes for 3 weeks as im waiting on my tent to be empty the roots popped out the bottom of the rockwool a few weeks ago the roots seem to be dying back as there only on a rockwool tray. Do you think theyll be ok going straight in the system? I was thinking about putting them in pots with vermiculite and perlite to get them petruding the rockwool what do you think?

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Re: The best advices for NFT

Post by Nanook of the north » Mon Aug 20, 2018 9:35 pm

Very good bulls.
Pumps also need adjusted I would add throughout grow.
Spreader mat... If you need stealth.... Let it flow into the tank ;) stops all waterfall noise :)
Ohhhh..... And a fishtank wave maker makes an awesome thank nutrient mixer!

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Re: The best advices for NFT

Post by Nanook of the north » Mon Aug 20, 2018 9:37 pm

Personally nasty I'd remove all dead roots on transfer. If desperate put them in a dwc type environment and water repeatedly, daily but keep the roots in the dark
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Re: The best advices for NFT

Post by Nastyhabitz_ » Wed Aug 22, 2018 9:22 pm

Black Grouse wrote:
Mon Aug 20, 2018 9:37 pm
Personally nasty I'd remove all dead roots on transfer. If desperate put them in a dwc type environment and water repeatedly, daily but keep the roots in the dark
Cheers mate also do you normally leave the white wrapping on the rockwool blocks after transfer?

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Re: The best advices for NFT

Post by Nanook of the north » Wed Aug 22, 2018 9:24 pm

No. I remove it. I tried leaving it on once and got 14 zips off 4 plants instead of 20+. Also make sure the water flows with the rock wool channels :)

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Re: The best advice for NFT

Post by Oxy » Tue Apr 23, 2019 1:26 pm

Love it


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