Setting LEDs at the right height to select phenos "thriving in intense light," killing the weak

Rocket Soul

Rocket Soul

Well-Known Member
OSBuds said:
As you know, light is the major environmental variable used to drive photosynthesis in plants. However, if temperature, humidity, CO2, nutrient, or media-moisture levels are outside the optimum range for the plant species you are growing, photosynthesis will be limited. There is a principle of limiting factors that has to be considered when cultivating plants. Understanding how each factor will influence plant growth and development, along with the relationship between each variable, will help you make optimal decisions regarding your environmental conditions. Cultivation under high photosynthetic photon flux density (PPFD) using LED technology is an emerging technique, and depending on your plant-growth facility, there may be some environmental variables you need to adjust in order to achieve your cultivation goals
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This is more or less what I've been trying to say: light intensity, metabolism and temperature, transpiration, co2 levels, pot size... All of these factors are important and can create a bottleneck in your grow and your grow will only be as strong as the weakest link. If you want to improve your grow you gotta identify the limiting condition.
It seems to me that your project would probably give better results if you tried to dial a few of these in first.
There is also another thing to think about:
Are you totally sure that there's a 100% correspondence between a plant not dying from high intensity light and growing big buds? If so logic would dictate that the biggest trees and best fruit are growing in the desert.

For your experiment: 1:Sativas seem to have a bit more light tolerance, look into the history of your genetics and where they came from.
2: look into the 400-450nm light range. These blue-violets are usually missing in most led lights and have been shown to help the plant transpire better and be better at taking high intensity light without gets deficiencies.
 
Apostatize

Apostatize

Well-Known Member
Highlife42 said:
Sorry. I forgot to paste link.. Look now, should be there in same post. Wait?? How much of what is going to cost each month? Co2?
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Yes, I'm assuming each tank will be >$200 and then I can use an exchange program. I'll need a tank for each room, probably should've thought of that before I set up everywhere....

I'd used a CO2 bag in each tent, but thought it was bs ... didn't have a meter, so really couldn't tell. I see those humidity-activated CO2 producing bags/matts/sheets, they seem interesting but if it takes up a lot of space and doesn't last long, why bother....
 
Highlife42

Highlife42

Well-Known Member
I hear you. Well your rooms arent sealed by looks to me. However, dude. Do yourself a favor. No more money is needed lol Go buy some wood chips. I bought 40lbs for 2DOLLARS at a lumber mill by the Amish people.

1inch of wood chips on a 5gallon pot will provide ~1500ppm-2000ppm of co2. WOOD CHIPS BRO. I know youre using whatever pots they are called... So fill up a 5 gallon bucket of wood chips. If you get wood chips lmk....

This is under-estimated. And it works 100%. Natural Co2. and free if from the wilderness by decomposing trees/logs.
 
Apostatize

Apostatize

Well-Known Member
Highlife42 said:
I hear you. Well your rooms arent sealed by looks to me. However, dude. Do yourself a favor. No more money is needed lol Go buy some wood chips. I bought 40lbs for 2DOLLARS at a lumber mill by the Amish people.

1inch of wood chips on a 5gallon pot will provide ~1500ppm-2000ppm of co2. WOOD CHIPS BRO. I know youre using whatever pots they are called... So fill up a 5 gallon bucket of wood chips. If you get wood chips lmk....

This is under-estimated. And it works 100%. Natural Co2. and free if from the wilderness by decomposing trees/logs.
Click to expand...
There aren't enough emojis to reflect how much I appreciate the wood chips suggestion!!!
 
G

Gaussamer

Member
You'd probably want to start with genetics/phenos that do the most with the least light, instead of genetics/phenos which simply withstand intense light. If you don't concentrate on gram:watt or potency:watt you're going to be chasing diminishing returns the entire time.
 
Apostatize

Apostatize

Well-Known Member
Gaussamer said:
You'd probably want to start with genetics/phenos that do the most with the least light, instead of genetics/phenos which simply withstand intense light. If you don't concentrate on gram:watt or potency:watt you're going to be chasing diminishing returns the entire time.
Click to expand...
Hmm, that sounds like it requires patience or it's something to work toward over time. Selecting for resistance is quicker, perhaps that's why it appealed to me. Ok, so before I get too committed to this height, I'll see how they do. So far, I've mostly selected for smell, yield, and potency.
 
Apostatize

Apostatize

Well-Known Member
Rocket Soul said:
This is more or less what I've been trying to say: light intensity, metabolism and temperature, transpiration, co2 levels, pot size... All of these factors are important and can create a bottleneck in your grow and your grow will only be as strong as the weakest link. If you want to improve your grow you gotta identify the limiting condition.
It seems to me that your project would probably give better results if you tried to dial a few of these in first.
There is also another thing to think about:
Are you totally sure that there's a 100% correspondence between a plant not dying from high intensity light and growing big buds? If so logic would dictate that the biggest trees and best fruit are growing in the desert.

For your experiment: 1:Sativas seem to have a bit more light tolerance, look into the history of your genetics and where they came from.
2: look into the 400-450nm light range. These blue-violets are usually missing in most led lights and have been shown to help the plant transpire better and be better at taking high intensity light without gets deficiencies.
Click to expand...
Ok, there's a lot to digest here but it's all helpful. Turns out, my final selection of strains are 4 indica-dom strains and 4-sativa-dom strains. It might be worth keeping one bloom-tent indica-only and the other sativa-only, so I can dial in conditions for each. I'll get sensors/other items mentioned ... perhaps I can find the limiting factor by tweaking conditions one at a time until I find the weak link ... I'll have to think about that.
 
D

Dimitry

Member
Sorry if im not understanding so I put wood chips in a bucket with water for fermentation and it will produce co2, is that correct?
 
bk78

bk78

Well-Known Member
Highlife42 said:
I hear you. Well your rooms arent sealed by looks to me. However, dude. Do yourself a favor. No more money is needed lol Go buy some wood chips. I bought 40lbs for 2DOLLARS at a lumber mill by the Amish people.

1inch of wood chips on a 5gallon pot will provide ~1500ppm-2000ppm of co2. WOOD CHIPS BRO. I know youre using whatever pots they are called... So fill up a 5 gallon bucket of wood chips. If you get wood chips lmk....
.
Click to expand...

ummm
 
Highlife42

Highlife42

Well-Known Member
Wood chips dude. Wood chips. Theyre STERILE too. I sell them too.. why? bc it works.. I hope you find out too bro. I only want to encourage others to stop the commercial products when nature provides :) I do have photos bro and lots of tracking to back it up. But you came at me wrong so im not uploading anything to prove a point. Go experiment and prove me wrong
 
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