The far red thread

V

VegasWinner

Well-Known Member
Bigdaddy212 said:
what are you using for IR
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The Emerson enhancement effect as it relates to photosynthesis of plants states that there are 2 photochemical reactions (PS1 & PS2) involved in photosynthesis which combine to enhance efficiency. Emerson measured photosynthesis using both red and far-red light (infrared) light. He found that the combination of the two speed up photosynthesis. Furthermore, Emerson observed that the yield obtained using both red and far-red light simultaneously was much higher than the sum of the yields obtained with red and far-red light separately. The best way to achieve the Emerson effect is by using an infrared wavelength of above 700nm in order to accelerate the interaction of molecular energy.

Two different reaction centers or photochemical events are involved in photosynthesis. One event is driven by red light (660 nm) and the other is driven by far-red light (680+ nm). Optimal photosynthesis occurs when both events are driven simultaneously or in rapid succession. These two photochemical events operate in series to carry out photosynthesis optimally.

How can one obtain both red and far red light in their indoor garden? The best way to do this is to grow with LED grow lights that are configured using the scientific principles of the Emerson effect. It is important to have the wavelengths of light necessary for photosynthesis and to have them at the correct weighted average percentages in relation to one another. By growing with LED indoor grow lights that have the Optimal 8-band wavelength formulation in addition to the principles of the Emerson effect the trichome formation and budding production will be ramped up resulting in the optimal yield for the indoor plants.http://www.theweedblog.com/exploring-the-emerson-effect-for-indoor-marijuana-growing/
peace
 
Uberknot

Uberknot

Well-Known Member
VegasWinner said:
I use Far Red for 30 minutes after lights out. I run IR full on 12 hour, and Deep Red 12 hours, as well. I run Royal blue 12 hours, and COB's 12 hours. RB at 9w/SF and COB's at 25W/SF. peace
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So is this all 1 for 1 for 1 for 1? or 3 to 2 to 1 to 1 ratio of leds?

and how much wattage per square ft of each?

how many grows have you tested this or is there a research paper somewhere that has data and results?
 
DonBrennon

DonBrennon

Well-Known Member
Ok, I'm building some cob lights, was wondering if the addition of some supplemental lighting was worth it, started reading this thread, got through 10 pages and after all the other research I've been doing, got a headache. Whats the current consensus? I've got 32 cxb3070 3500k's covering 32sqft.

1, Do I want just 10 mins of far red after lights off?

2, Will these do the job?

24 of these



ProLight Opto PK2N-3LEE-SD, Phenix 3535 Series Red LED, 740 nm 3-Pin 3535, Round Lens SMD package
RS Stock No. 894-7758
Brand ProLight Opto
Mfr. Part No. PK2N-3LEE-SD
RoHS status: Compliant

and 4 of these (they will be divided between 4 separate fixtures, hence 4 drivers)



Mean Well LPHC-18-350RS, Constant Current LED Driver 16.8W 6 → 48V 0.35A
RS Stock No. 706-6546
Brand Mean Well
Mfr. Part No. LPHC-18-350RS
RoHS status: Compliant

3, Has the timer issue been sorted? I WILL read on tomorrow, but it's late now. I know there are everyday light switches now, where you can program them so that the light stays on for 5-10-15 mins when pressed, although when I've installed them with led fixtures (i'm a commercial electrician), I've found that I have had to add a capacitor (at the guidance of the manufacturer, way above my paygrade), otherwise I get disco lights lol
 
Airwalker16

Airwalker16

Well-Known Member
Ibe just used 2 normale push pin timers set for same time. I have mine come on 5 min before main lights go off and then they're on for 10 by themselves. I used far reds from stevesleds.com
 
V

VegasWinner

Well-Known Member
Uberknot said:
So is this all 1 for 1 for 1 for 1? or 3 to 2 to 1 to 1 ratio of leds?

and how much wattage per square ft of each?

how many grows have you tested this or is there a research paper somewhere that has data and results?
Click to expand...
I am using the lights in a 2x2 area. The Far red at 15 pieces seems to work for me. i use 12 of each of the other colors because that is how many I can drive, At 3w each not a lot of power and energy, but the color does the work more so than the level of brightness it seems. There may be some science but not well documented past normal biology and botany. I figure about 26w per color os what I am doing which is about 9w/sf for leds and 50w/sf. peace
 
Uberknot

Uberknot

Well-Known Member
VegasWinner said:
I am using the lights in a 2x2 area. The Far red at 15 pieces seems to work for me. i use 12 of each of the other colors because that is how many I can drive, At 3w each not a lot of power and energy, but the color does the work more so than the level of brightness it seems. There may be some science but not well documented past normal biology and botany. I figure about 26w per color os what I am doing which is about 9w/sf for leds and 50w/sf. peace
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Well right now with the temps outside 80-90 just driving my 4 cobs at 50% @ 875 mA the heat in my 2x2 tent just in testing seems to always stay above 80 and reaching upper 80's if on during the day. I do not think I could add any more heat unless I had cooler air coming through the intakes.

It all does sound interesting though and why I grabbed one 2700k COB to try and have just a little more red.
 
BOBBY_G

BOBBY_G

Well-Known Member
would prob be a bitch to solder. we should ask cutter or steves or someone to get stars made with those
 
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