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It all seems so complicated, but really its just a few degrees of temp and a bit more RH. Been running QBs for a while now and the only issues i had were the first month or so before i figured out that just turning my extraction fan down by about 15 percent provided the neccessary climate...

Are we still pretending 'led deficiency' is a thing?

It depends on the plant and whether I'm in veg or flower, but during flower i usually end up around 18 inches from the canopy.

This is definitely and understatement. I run 2 QB 288 v2 @ around 220 watts during flower and it crushes my 2x3. I'd need that extra foot of width to even be able to use the 260 watts i have available. Nice job on the side by side so far. :peace:

The components tend to run cooler on the HLG boards because they are higher quality. More efficient, less resistance, that sort of thing.

There is a whole sub-section of this forum dedicated to florescent/cfl growing at the very top of the Indoor Growing section you posted this in. I'd check that out for info about those lights and how best to use them. Good luck.

The amount of crazy going on in this thread has reached critical mass. :o:peace:

I'd imagine it would be fine. Most of the chinese knockoffs run hotter than HLGs, but most don't run dangerously hot. Just make sure you are a little extra careful with those lights in general. Knockoffs are knockoffs for a reason and there is a reason they are cheaper. Just be safe.

A bit hard to judge plant health under HPS lighting, but from what i can tell they look great. Any pics under normal lighting you could share?

You could use them for veg lights. The old blurples seem to do that fairly well at least. They are not going to be better than your HPS though.

They run hotter than the real deal, but they do the job. I'll stick with HLG personally because i like supporting company's that innovate and care about their customers, but like I said, if you can't afford HLG these will grow some plants.

If you are going to go with LED, HLG Quantum Boards (and all the HLG products actually) are top notch. Excellent build quality, super high efficiency components, and most importantly, results. I'm 6 runs deep with my HLG lights and i could not be happier. @Stephenj37826 and @robincnn have...

So what are we thinking here, gentlemen? Russian troll bot? Cranky old stoner who doesn't understand the internet? Lonely soul who deep down just needs a hug? Seems like a distinct trend lately of arrogant know-it-alls appearing among us, shouting a bunch of nonsense about tech they don't...

Twinsies!

Even the eyeball test should kind of let you know if you are getting what you should out of those diodes. Any of the high efficiency diodes like the lm301b or the lm560c being run anywhere near full power should be blindingly bright. I've seen many examples of people being super disappointed...

This is fascinating to me.. I am the exact opposite. All the long flowering landrace sativa I've grown/smoked has given me the screaming heebie jeebies. Pure indica and indica dominant and I'm chilly chill.

Just picked some of these up... i'd love to pick your brain on how your experience with it went.

Other than the really crispy ones i don't see a single leaf on any of those that there is any reason to cut. Get rid if the ones that were fried if you want and leave the rest alone.

I dunno, not having to cool my grow quite as much doesn't seem like any actual work to me. To each their own.

I personally found my SS 440 more similar to growing under HPS that my HLG QBs. I didn't really have to change much when i switched from hps to the 440 because they both run kind of hot so heat exchange was similar, the plants seem to react similarly as well. The QBs took a bit more dialing...