Both 600w luminaires put out 600w of heat.
It's just a matter of when those watts turn into heat that varies.
...seems to me ...lot of people... forget the Spectrum influences on leaf temps too...
there are differences on leaf temps on HPS or MH or LEDs too ... just by their respective Spectrum Lights....
KEVIN FRENDER
is Chief Science and Technology Officer of Black Dog LED. ...hey much LOVE to BDL bros....
Traditional High-Pressure Sodium (HPS) Lights Put Out a Lot of Infrared
IR (Radiated Heat) and mostly
Yellow Light.
Chlorophyll, the Pigment responsible for Photosynthesis, cannot use
Yellow Light directly,
which forces Plants to use other Pigments to convert
Yellow Photons to
Red Photons ones
that Chlorophyll can use, releasing Heat in the Process.
These Two Mechanisms Combine to Put Limits on How Intense HPS Lights Can Get Before
Leaves Overheat.
This is Why Plants Under HPS Lights Can’t Tolerate Temperatures Much Above 80°F;
however, Active Cooling Increases HVAC Costs.
Cannabis Plants Grown with Natural Sunlight Receive a Much Broader Spectrum
Comprising Lots of
Red Light and
Blue Light,
allowing them to Thrive with Temperatures Over 90°F, and some even Over 100°F.
Canopy Penetration — How Far Light Can Travel in a Dense Mass of Leaves and Flowers — also affects Yields.
HIGHER LIGHT INTENSITY means Better Canopy Penetration,
and
LEDs with a Spectrum Designed to Allow HIGHER LIGHT INTENSITY
Without Overheating the Leaves Can Achieve This.
However, Canopy Penetration also Depends on the Light’s Wavelength,
as Some Colors of Light can Travel Through Leaves Better Than Others.
Photons often Lose Energy when Bouncing Off or Traveling Through Leaves,
Shifting them to a Higher-Wavelength (
Redder) Light.
Once the Light is Shifted Past
Red, Plants Can’t Use It For Photosynthesis Anymore.
Starting with Higher-Energy (Shorter-Wavelength)
Ultraviolet-A and
Deep-Blue Photons
allows them to Bounce More Times and Go Through More Leaves Before Becoming Ineffective For Photosynthesis.
This Deeper Canopy Penetration nourishes Lower Leaves
and Provides More Energy for Plants To Grow High-Quality, Dense Flowers Much Lower On The Plants.
However, many Modern Light Fixtures Don’t Emit
UV and
Deep-Blue Light.
Creating Higher-Energy Photons Requires More Electricity Than Lower-Energy Photons,
making Lights that Create UV and Deep-Blue Light Less Electrically Efficient per Photon Created,
so They Look Worse On Paper.
However, the Increase in Yield Per Square Foot More Than Makes Up For The Decreased Electrical Efficiency.
Light isn’t the only Factor for Maximizing Cannabis Yields, but it is certainly one of the Most Critical.
LEDs are vastly More
Energy Efficient than Conventional Lights Technologies,
and most Modern LED Grow Lights Have A Much
Better Spectrum For Growing Plants Than HPS or MH lights.
However, Simply Maximizing the Amount of Light Distributed To A Plant
or Looking Only At The Number Of Photons A Light Can Generate Per Watt
Ignores One Of The Most Exciting Tools that LED Technology Can Provide —
Customizable Spectra
By Carefully Tuning the Spectrum Output To Plants, We Can Control Their Responses To Maximize Yields.
Spectrally-Tuned LED Lights Containing
UV-A,
Deep-Blue, and the right Ratios of
Reds and
Blues
can Maximize Light Intensity and Canopy Penetration,
which are the Keys to the Future Of Increasing Yields in Indoor Cannabis Gardens —
All While Reducing Overall Electrical and Cooling Costs.
PD...y ellos no hacen mencion a que en HIGHER LIGHT INTENSITY Lights el verde tambien juega un papel importantisimo....y en intracanopy lights y undercanopy lights tambien.... y blancos con verde... nos pasa lo mismo que con blancos con rojos... si los trae incorporados el blanco te ahorran poner muchos leds monocolores en rojos y en verdes.... y en azules usados en blancos tambien hay curiosos leds para usar en cultivos... y no soy botanista....pero algo he leido en estos años que llevo siguiendo el tema de iluminaciones con led para cultivos....y algunos botanistas me han dado algunos consejos al preguntarles cara a cara....hace ya mucho tiempo...ya volvere a preguntar a los que tenga por mi zona para actualizarme y quizas hacer nuevos amigos.... no llevo prisa.... y me encantan ver y oir otros POVs...aunque opinen diferente.... me dan diferentes perspectivas... y enriquece la mia...mil gracias a los tecnicos agricolas....me ampliaron los caminos y expandieron mi vision general.... y de gratis...casi naaa...
PD1...tampoco hacen mencion al FR o IR y su influencias en el crecimiento de las plantas...mirando mas alla de la fotosintesis...o del PAR...
...en PBAR...no solo interesa la fotosintesis que es importante...nos interesa todo el espectro mas alla de la fotosintesis...para explotar otras cosas...aparte de la importante fotosintesis....
im old exelectrician...im not a botanist....off course.... just a curious for info....
...there are diferences on traditional lights and leds... both are used... use what you prefer... understand both ways on the right way... makes you takes better DECISIONES en usar el camino que mas te puede ayudar en cada caso en particular de cultivo...
el presupuesto inicial de los hps para empezar a cultivar....los sigue haciendo atractivos para bajos presupuestos...aun con sus problemas conocidos.... y para coger experiencia ....y vas añadiendo leds...y haces una transicion poco a poco...entendiendo ambas vias por el camino.... tu decides al final...con que te quedas iluminando...
gracias por el like bro G....asi que en inglaterra ehhh pillinnn... estos isleños...lol...mucho amor...cuidese...
ISLAND POWERRR....lol...
Paz y Amor...en 2021 aun mucho mas...
Saludos desde Tenerife - Islas Canarias....
e function actived...
