Quote Originally Posted by THContent
Thanks for clearing that up for me Weezard, I will be giving the LED's a try and see what kind of results I get compared to 600W under same conditions. Any advice on which ones to get?
The commercial led market sucks.

What a steaming load of marketing stank!
3 bands, 5, 8, closer shaves, betta eggs, FEH!
Greed and ignorance abound.

The best commercial unit seem to be the ones that Str8 is using.
But, that's not my personal experience, just observation mixed with some trust.
He used to grow under HPS.
Took some balls to change over, but it paid off.:thumbsup:

Wattage is not as important as using the most efficacious wavelengths for cannabis.

I have used 635nm. reds and 660nm. reds.
There was quite a difference.
More than enough to compensate for the lower electrical efficiency of the 660 emitters.

The blue frequencies seem less important wavelength-wise.
But ratio of blue to red is important.

Look-up "Calling out to Weezard for led advice" by Crunchypants.
Where-in, we build several very successful lights.
All of which are still in service.

While most folks were just looking to grow "as well as" HPS,
I reasoned, that once one exceed the amount of useful light that the plant can handle, the souce of the light is irrelevant.
My ambition was to outgrow sunlight, on a budget.

Wasted some energy trying to supply "missing wavelengths" that a plant just might pine for.
CFLs for white fill, far red in the "evening", UVb, all kine sing.
I was, as is my wont, overthinking it.
The girls were overjoyed with 2 wavelengths once the intensity crested 80k LUX.
I actually grew bigger plants under my dichroic "cake pan" lamp than I did under tropical sunlight!
Started with very similar clones.
In fairness, the LED girls were treated to extra CO2 .

You might like knowing that I started up with leds to prove that they did not work!

Could not be happier about being wrong in this case.
(Can not afford HPS power bill at our rates).
So, I'm a very happy LED camper.

They were not cheap to build, but the cost was amortised in less than a year!
So now, I'm set to save a fortune with them over the next 8 or 9 years.:jointsmile:

Pleased to meet you Mr. Content, I love talkin' to an open mind.

Aloha,
Weezard