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http://ledgardener.com/diy-led-strip-build-designs-samsung-bridgelux/ That link includes links to where you can buy the various strips (no guarantee they'll be in stock). It also has a lot of good info on how to put one of these lights together.

If you're dealing with good COBs, strips, or Samsung LM561C-based PCBs (like HLG's Quantum Boards), figure to replace HID at approximately 60% of the wattage.

Add to that the fact that no empirical evidence has been provided to prove that LEDs have a "deficient" spectrum.

Sounds like a great excuse to set up another grow space!

25w in one tent and 30w in another.

Just saw that HLG has another new board up on their site. It appears that it's currently only available as part of a plug-and-play package, like the HLG-65 (QB120) and HLG-40 (QB96), but if history repeats, we could be seeing these boards as part of the DIY selection. It's a 192-diode board run...

Try turning it down. You never know... But you hit on another important factor - the strain. I think genetics often play the biggest part.

I'd say that depends. Some, like Prawn here, make it work. This is merely an uneducated observation, but it seems to me that coco and hydro growers fare better at those high light-levels? Personally, I've been staying well under 40w/sq ft (25-30 watts), because my plants get too toasty...

It's good for QB132s, which are 36v. A four-pack will cost you around $130. Perfect for a 3x3.

There's a certain breed of HPS fanboy that will caterwaul the most tenuous of complaints, insisting against all reason that LED simply cannot beat HID. And they're just as frustrating as the LED fanboys who act like their lights are magic, and that anyone running HPS is a fool. Invariably...

Agreed. I guess it's the semantics of "supplement" that is key here. I think of supplementing as adding inputs during growth, rather than pre-amending the soil. But I understand what you're saying.

Well it's clear that you're not afraid to DIY, so have a look at some of the LED builds over in the LED sub-forum. Or, if initial cost is a barrier, a 150w HPS would do justice to that space. Not saying you can't get results with 125w of CFL, but you'll definitely get more from LED (not the...

Check out www.ledgardener.com for guides and tutorials. And there's always Growmau5's YouTube channel.

I don't have any first-hand experience with LEDs outside of 3000k and 3500k, but it seems to me that the plants just want enough light (and an appropriate environment) more than they want any particular spectrum. I imagine spectrum-tuning could be of some value to someone that has already dialed...

Some people cling to their paradigms against all reason or evidence. It isn't just that they don't want to believe - they want to NOT believe. Seems like his mind was made up a long time ago. Or maybe he's just trolling. Either way, I've come to the conclusion that it's a waste of time and...

Depends on the style of organic growing, wouldn't you say? Many water-only growers don't supplement at all, choosing to rely on a living soil.

His arms should be tired from all the reaching he does.

Oh, Bro... No.

Triumphant.

I feel for you, brother. Best of luck on finding a better one next time around.