What's new
By:
GrowWeedEasy.com
You're browsing as a guest. Sign up to join the conversation, share your grows, and get help from thousands of fellow growers — it's free and takes less than a minute.

Can autoflowering strains (auto Mazar, auto Ultimate) take 60 000+ lux?

DANGERDAN said:
Having a light source as close as possible does not provide more energy to a plant, all that does is change where photons land.

See my article on close light proximity for more information.
Click to expand...

Sorry, and not to start a flame war, but although your facts look mostly right, I don't agree with your conclusions.
 
Yeah that's what I've also understood from GWE guide. The higher lux the better up to a point with cool temps and low RH.
Right now my temps fluctuate between 19C - 22C at canopy level, RH fluctuates between 45% - 55% and highest point of lux is around 73 000. Are there benefits in lowering the lights to get let's say 76 000 lux while keeping the temps and RH in check?
 
Last edited:
DANGERDAN, I have stopped keeping my LED's as close as possible- it's really hard, as so many push for closer -which IMO stresses the auto's negatively.

My last 3 grows -I've kept the distance at the maximum end of the range and my yields have increased 2 fold, with the only noticable difference is slight decrease in bud density, but the total weight offset and the increased bud quality (trichomes) is amazing. I still bring the LED close for the last 2 weeks.

At this point, I set the light @26"-28" from the top of the medium and only adjust ONCE when I transplant into a different (taller) pot- Otherwise I let the auto grow into the light.

So to answer the OP question- yes but it would depend on what stage the auto is at.
 
Using lux, 60,000 lux is a great target for HPS. If you find that the light source is too high to reach that intensity and too much light is missing the canopy. Then bring it closer, but no higher than 70-80,000 lux. The higher you can have your light, the better. But only to the point where light is not wasted by missing the intended area.
 
Thats fine Dr J. I have read books on the subject, spoken to physicists and i am sure of my conclusion. Light physics is pretty clear on how light behaves. Commercial growers know this and have their lighting systems several feet high. If having a light source closer proved beneficial, you could have a lower wattage system really close and have it perform identical to a higher wattage system that is higher up. But you cant.

If you would like to know more, there is a great book by alex ryer that talks about light physics and metric systems.
 
You must log in or register to reply here.
Back
Top