How much more yield with a good LED 1k vs 600 hps

[Greengrouch]

My 480w bar leds yield about the same as I did under 600w hps. Once you’ve got enough light more of it in the same space doesn’t always mean bigger yields, sure there might be a potential for higher yields, but that comes down to environment, training, and canopy management. The few times I tried running 1000w hps in my 4x4 came out a lot worse than the 600

 

[inth3shadowz]

Id be more focused on environmental variables and nutrient feeding than hps vs led...they both work just fine. Im going to do a 600w HPS vs 600w led soon in the same room and compare.

 

[amneziaHaze]

The heat development of LED lamps is significantly lower than that of old incandescent lamps. Incandescent lamps generate only about 5% light from the energy fed in, the remaining 95% is converted into heat. With current LED lamps, things look much better. Here about 40% of the used energy is converted into visible light and only 60% into heat.

The percentages show the difference in heat generation between the two lighting technologies. It becomes even clearer when comparing two lamps of the same brightness:

• 60W incandescent lamp with 730 lm
• 6W LED illuminant with 730 lm

The incandescent lamp converts 95% of the energy used into heat. The LED illuminant achieves an efficiency of 35% and converts 65% of the used energy into heat.

Incandescent lamp: 60W · 0.95 (95%) = 57W Heat output
LED: 6W · 0.65 (65%) = 3.9W Heat output
The heat loss of the incandescent lamp is almost 15 times as high as that of the LED.

but yes i guess you are right(i am not at all educated in watts like you) watt is watt. but led need less watts to produce same results as more watts different type of lamp

 

[StareCase]

... Im going to do a 600w HPS vs 600w led soon in the same room and compare ...

What is the colour temp of your LED?

 

[MedicinalMyA$$]

The difference in heat between HID and LED is how the heat is emitted. HID has much more radiant heat, which is projected towards the canopy, which is why it feels warmer than LED. This is also why you can run higher ambient temps with LED compared to HID. At the end of the day though 1 watt = 3.41 btu's.

I found the reflectors/hoods trapped and accumulated the heat under them, I think maybe the bulbs acted like heaters too

 

[michojay]

Going from a 600 hps to a 600 watt LED set at 80%, I'd expect a 50% increase in yield (using less power) for your first grow, but if you dial in all aspects of your environment, media, nutes, feeding schedule, etc, you could potentially yield quite a bit more.

Is it really that much more? 50% that’s insane! Am I really missing out that much from not going LED?

 

[Hobbes]

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Michojay I just made my best harvest ever and it was twice what I ever achieved with an HPS.

HLG has some fantastic LEDs, like the Scorpion Diablo I've just started using.

.

 

[xtsho]

If you're only getting 9.5 ozs in a 4x4 with a 600 watt HID it's not because of the light. I've pulled more than twice that with a 600 watt HID in a 4x4.

Something other than your lighting is the problem. Everyone always says switch to LED but that isn't going to just solve whatever problem is causing such a poor yield. Something else besides type of light is why your yield is so poor.