Hey, if you look carefully.. that growth was not intended to bring out max yield, it was to see Dutch Passion's new strain "Think Different" performace, one plant alone... so, for the test, there where 3 plants germinated. Only the biggest one was left for the whole process. If he had left the 3, have no doubt, results would have been better. As i said, that experiment, was only to see the strain performance. 356 grams from only one plant in 75 days using 600W of power is just incredible. Nevertheless, a 1000W HID would also deliver that results i'm guessing, only with a higher light bill at the end of the month, which would also increase the cost of the growth. AND! it would be good to mention, he isn't using the best led's available either.
And there is one fact everyone is forgetting here. Everyone talking about how pricey LED's are, and everyone is forgetting the longer lifespan. You save a lot of money every year you don't have to change bulbs. Also, the extra yield you can get with LED's, makes the panel pay for itself sooner than you could imagine.
If you can afford it, have no doubt, it will pay itself much sooner than you expect.
When you go LED, you never go back, new things always need some time and experimentation to replace old technologies... but many people around the world, are going beyond the bad reputation first generation cheap chinese led panels gave to this technology.... don't stay there, no one is going to argue that chinese led's can´t outperform HID yet... in that case, i think we are all certain that HID still is a better option... but when you talk about high quality leds, to keep saying HID outperforms those, it's just being to conservative and not wanting to accept reality, that HID was already outperformed in efficiency by LED technology. At a higher price, but with a lot of benefits other than just the higher yield, you have the longer lifespan, the easy to mount easy to use, the low heat, the better distribution of the light, etc. many things to consider. BUT! HID lights, still are excelent lights, it is just that present developments, had brought up a more efficient technology already available. To switch to this more efficient tech, is just a matter of will and money... and a lot of reasearch so you don't end up with a cheap crappy panel and then you go screaming out there how LED is a crappy technology that hasn't caught up with HID standard technologies. That happens to almost everyone who falls for false marketing promises. But if you do your research and pick a high quality panel, have no doubt results, WILL be better than with an HID light
Cheers to everyone.