What would you pick led or hps?

cdgmoney250

Well-Known Member
I think the main point is that ambient temperature affects the surface temperature of objects as well as any directed heat/light source. A cat may enjoy the warmth of the HID bulb, up to a certain point. Above that point, the cat may become uncomfortable and move.

This is somewhat analogous to leaf temperature. If the leaf temp is raised passed a point of photosynthetic efficiency, due to non photochemical quenching, then overall photosynthesis can begin to diminish. Plants can’t get up and move to a cooler location like a cat can. They have to deal with excessive heat/light/drought through physiological means. This results in more plant energy being put into reducing photoinhibition. When we are paying energy bills to optimize the environment of an indoor grow, this scenario can become counterproductive.
 

DanKiller

Well-Known Member
This is known, still what's the point behind this claim in regards to the issue at hand ?
That's what Ive been trying to figure out lol
 

Beeswings

Well-Known Member
This is known, still what's the point behind this claim in regards to the issue at hand ?
That's what Ive been trying to figure out lol
The point is the cat will only prefer the hid light under certain conditions, just a the plant will.
 

tstick

Well-Known Member
Have you ever tried to pick up a cat that has been sleeping in a bright sunbeam for awhile? They just melt! :)

Anyway....yeah plants will grow under LEDs or HIDs just fine. I have no science to back it up. I'm just saying that, after growing for a long while, I believe that the plants "like" (whatever that means) the light coming from a warm bulb in a directional way. But, most of the time, I use LEDs to grow because I believe they are safer.
 

Beeswings

Well-Known Member
Have you ever tried to pick up a cat that has been sleeping in a bright sunbeam for awhile? They just melt! :)

Anyway....yeah plants will grow under LEDs or HIDs just fine. I have no science to back it up. I'm just saying that, after growing for a long while, I believe that the plants "like" (whatever that means) the light coming from a warm bulb in a directional way. But, most of the time, I use LEDs to grow because I believe they are safer.
I'm more of a dog guy myself lol. The white one loves to lay out in the sun, the brown one prefers heat but shade, the black one is all about the coolness and the shade. The white and and black will break through frozen water to retrieve a duck though and be very excited about it.
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DanKiller

Well-Known Member
The point is the cat will only prefer the hid light under certain conditions, just a the plant will.
Cool, so in std growing conditions, not extreme (although like we said, 90 is not that extreme if any) the cat/plant will prefer the more complete light.

This is just another smoking gun, a nice little touch on many more evidence and aspects in the leds vs mostly anything else
The literature and the studies is out there for everyone to see it's not hidden.
At the end, everyone is entitled to choose and pick what suit them the best.
We just share information.
Happy growing and those are some nice dogs @Beeswings !
 

Beeswings

Well-Known Member
Cool, so in std growing conditions, not extreme (although like we said, 90 is not that extreme if any) the cat/plant will prefer the more complete light.

This is just another smoking gun, a nice little touch on many more evidence and aspects in the leds vs mostly anything else
The literature and the studies is out there for everyone to see it's not hidden.
At the end, everyone is entitled to choose and pick what suit them the best.
We just share information.
Happy growing and those are some nice dogs @Beeswings !
Honestly I'm in Minnesota and hope the growing regulations get more loose so I can utilize more growing techniques, right now I use the sun, LEDs and florescent tube. I'd like to try so many more variables with so many more plants.
 
Depends what n where u live if the temps are high hps will be too much hard work and load LEDs are lower heat and. Perfect lumens all year round they have a spectrum of light Which covers a lot more
 

Jonesfamily7715

Well-Known Member
Led efficiency is very dependant on ambient temperature as well these companies data is based on perfect conditions, this chart is from the lm301h datasheet, remember they are talking about the solder junction point temperature not ambient the actual diodes are higher temp than your room in almost every case.
 

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hillbill

Well-Known Member
Almost all LED growers I know had HPS for years before up grading to LEDs, especially newer phosphor whites really full spectrum white Boards and Bars.
The conversation is really archaic
However I do throw in an old Philips CMH 4000k.

Not a Purist
 
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Coldnasty

Well-Known Member
I’ll just say, HPS all day but I’m just a hobby grower concerned with quality that skips out on flowering in summer months.
 

amneziaHaze

Well-Known Member
LEDS less power more yield less temperature longer lifespan higher thc

my attis 300W has a 2.7µmol/J best hps has 1.7 and hps just shoots all its light down the middle its soo hot you cant use it soo you have to put it away.attis has 12 light bars spread in every corner of the room making the light uniformal as possible only the edges of the room get lower light

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