L.E.D. Argument Thread For Dummies:)

[gorillaglueaaron]

lol

Top LEDs are 200+ lumens/w. Try to find any HPS that produces anything near that.

 

[Arwood]

not if they are the same wattage.

This site does a decent job of showing how wattage =/= heat output. http://reptileuvinfo.com/html/watts-heat-lights-lamp-heat-output.html

Different types of bulbs showing different temps. The site does say that not every bulb was true to its wattage, but it's pretty pretty obvious from their measurements that different technologies produced different temperatures

 

[SaintsSamilia]

This site does a decent job of showing how wattage =/= heat output. http://reptileuvinfo.com/html/watts-heat-lights-lamp-heat-output.html

Different types of bulbs showing different temps. The site does say that not every bulb was true to its wattage, but it's pretty pretty obvious from their measurements that different technologies produced different temperatures

Totally unrelated sport or hobbie but the bowfishing world is loving the bringing about of led bulbs over hps for multiple reasons the heat being one of the top reasons being used. So yeah hps definitely has a higher heat signature than led

 

[SaintsSamilia]

bowfishing leds is actually what led me to the grow lights of alibaba and shit tons of savings on bowfishing gear in general

 

[growsince79]

Top LEDs are 200+ lumens/w. Try to find any HPS that produces anything near that.

Thats why 100w led can replace a 150w hps. Almost 50% more lumens/ watt. So in the course of one flower cycle, the LED saves me $2.88 per light for a total of $8.64. That's almost $10 /lb. Unbelievable savings.

 

[Dirtbag]

Top LEDs are 200+ lumens/w. Try to find any HPS that produces anything near that.

Exactly. LED and HPS dont produce the same heat at the same wattage. HPS is less efficient at producing light from energy and produces a lot more heat comparatively at the same wattage.

 

[greenscholar]

This site does a decent job of showing how wattage =/= heat output. http://reptileuvinfo.com/html/watts-heat-lights-lamp-heat-output.html

Different types of bulbs showing different temps. The site does say that not every bulb was true to its wattage, but it's pretty pretty obvious from their measurements that different technologies produced different temperatures

lol

 

[Dirtbag]

Thats why 100w led can replace a 150w hps. Almost 50% more lumens/ watt. So in the course of one flower cycle, the LED saves me $2.88 per light for a total of $8.64. That's almost $10 /lb. Unbelievable savings.

Not if you need to run a heater

 

[greenscholar]

Lol real watts not equivalent.

 

[Anthem]

It’s not logic a watt produces 3.41 btus. You can’t change this. 600 watt hps or 600 led produces the same heat.

This is exactly what heat load calculators state. 1 watt = 3.41 btu's.
@Dirtbag, do you think a 600 watt HPS can be cooled with 3000 BTU's?

 

[gorillaglueaaron]

Changing the subject a little bit but I'll still discuss efficiency.

Looking at this graph of lm301b (the most popular diode in LED grow lights at the moment), wouldn't it be worth putting our LEDs in a fan cooled hood? A 100 cfm fan is 15w so to make this worth the watts, we would need to use 1 fan per 300w light if it reduces the light temp from 60c-30c. Does this make sense to anyone?

 

[gorillaglueaaron]

Lol real watts not equivalent.

We're not talking about equivalent watts. Real watt to real watt, LEDs are far more efficient than HPS.

 

[Anthem]

Changing the subject a little bit but I'll still discuss efficiency.


View attachment 1091505

Looking at this graph of lm301b (the most popular diode in LED grow lights at the moment), wouldn't it be worth putting our LEDs in a fan cooled hood? A 100 cfm fan is 15w so to make this worth the watts, we would need to use 1 fan per 300w light if it reduces the light temp from 60c-30c. Does this make sense to anyone?

All the old purples had fans FWIW

 

[greenscholar]

Listen all im saying is when you say it "runs cooler than my hps or my cmh" of course it does if your using less watts at the wall. Maybe this link will help you all. https://pllight.com/how-led-and-hps-lighting-can-affect-air-and-leaf-temperature/

Atwood what you posted is useless think of the bulbs as a magnifying glass. Same wattage just focusing the light differently.

 

[gorillaglueaaron]

All the old purples had fans FWIW

I'm talking about full on cooled hoods like HPS and HID.

 

[gorillaglueaaron]

Listen all im saying is when you say it "runs cooler than my hps or my cmh" of course it does if your using less watts at the wall. Maybe this link will help you all. https://pllight.com/how-led-and-hps-lighting-can-affect-air-and-leaf-temperature/

You're able to use less watts because less heat and more light is created.

 

[Edinburgh]

We are all in this together, there is absolutely no reason to disparage anyone, there plants, or there set up, we all do the best we can with what we have available, try and help your fellow growers, people think cannabis is easy to grow bc it is a weed, the person who taught me allways said cannabis is the eayest plant to grow but one of the hardest to grow correctly and i grow African violets now thats hard, so if you cant help someone with friendly advice dont be mean, there is to much meanness in this world allready.

 

[greenscholar]

We're not talking about equivalent watts. Real watt to real watt, some LEDs are far more efficient than HPS.

THAT WAS FUN.

 

[3 balls]

Holy moly. The ratio of mid to large grows vs. tent grows sure has flipped on this site. Seems like everybody's in a tent.

 

[Mr.GreenthumbOG]

Holy moly. The ratio of mid to large grows vs. tent grows sure has flipped on this site. Seems like everybody's in a tent.

Tents are the most common.
and what better way to show legal hobby grows.

Not if you need to run a heater

with this arctic air I have never missed my HPS more. Was considering digging them out of the shop.