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Waiting for white + lots of added red growlights to get cheaper before jumping ship again. Benefit of pure white diy over adding red is simplicity. Can't really be bothered to add red myself. In greenhouses things are a bit different since those lights are often going to be supplemental or...

Did you use any kind of thermal paste for it? Edit: just read your follow up

What's the heatsink requirement for the hardstrip? http://www.digikey.com/product-detail/en/samsung-semiconductor-inc/SI-B8T342560WW/1510-1324-ND/5875178 It's 33,5 watt (test current) which normally requires a good piece of aluminium but that's for a COB which has a very small surface area...

They're better than CFL. You may want to pull off the cover/diffuser to check if they're directional or omnidirectional. If they're directional you don't need a reflector, otherwise you should use one just like with CFL.

His parents getting richt from ad-money

Drop off with a proper heatsink should be very low. Bulbs generally have much worse thermals, super small heatsink, enclosed, driver is also enclosed next to the heatsink and less efficient than good meanwells (most likely) I bet money on it that the average COB on the average DIY set up runs...

Yea, I saw. Still waiting for them to arrive at digikey. Maybe I'll get a new heatsink and new Veros but haven't been growing stuff for months, not even peppers this time.

Yea. Everything below the absolute maximum current rating (1400mA) will work.

HPS is more efficient at higher wattages. 600-1000 watt hps is a lot more efficient than 150 watt. Even 250 watt is a step up in efficiency compared to 150.

Only Satisvied would keep his old ventilation after switching to LED and then complain about cold temperatures instead of turning down the ventilation.

White Nichia LEDs do have a better spectrum than Cree chips...

Those guys are more about white power than stormfront lol

COBs are ultimately just SMDs smashed together in a very tight package. Waffle LEDs obviously have advantages over SMDs so they must also have those same advantages against COBs

Because different phosphor mixes can't change the spectrum, eh?

Satisvied loves that Wageningen study which only tested "synthetic sunlight" and sunlight with added red, not white COBs. Spectrum of the sun which was used in the Wageningen test. Spectrum of Cree cobs Notice how the spectrum is clearly different and that the Cree peaks at red. Also the...

Spectrum of the sun which was used in the Wageningen test. Spectrum of Cree cobs Notice how the spectrum is clearly different and that the Cree peaks at red. Also the sun is 5500K Lower colour temperatures and most COBs used are 3000-3500K have much more red than a high K light like the...

You know they tested "synthetic sunlight" and sunlight with added red, not white cobs right? Not all white light is the same The spectrum of the sun is very different from a 3000k Cree SMD or Cob.

Manufactures can always put further research in phosphor coating to optimize it for horticultural stuff In the end COBs are just a bunch of SMDs stacked together in a small area.

As opposed to HID which has a much worse spectrum. Lower colour temp cobs fit nicely with the McRee curve, HPS has a shitton of yellow/orange.

Those Mercury HID streetlights are cool indeed