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Don't bother with CFL, electricity prices in Denmark are enormous so you really shouldn't. What LED growlight are you using? If it's some Amazon/Ebay discount blurple LED, the wattage is fine. But it's a bit inefficient. Best philips LED bulb are actually a bit more efficient than cheap ebay...

Define "success". Are you getting at least 1 g/w? Btw it's not the best light under 400 dollars.

What LED tubes do they have in the grow store? Suncloak Horizon claims 18240 lumens. 182 lumen/watt Philips claims 156 lm/w with their 6500K master LED tube http://www.leds.de/out/media/Datenblatt_75048.pdf Osram has numerous tubes that are 150lm/w. Efficiency should be close if the plastic...

T-5 LED bulbs most likely already have diffuser losses factored into the lumen output. Ballast/driver losses probably not but the same goes for the strips. The best philips/osram/other quality brands "premium" products should be very close to the best LED strips. Unless new diodes have just...

Bolting Lettuce/cabbage looks cool as fuck.

Heatsink should be easy, just a normal aluminium extrusion like they used in the past. The fact that the COB is so big should make cooling a little easier, as long as it fits.

Cree has released a new bin for their XP-G3 royal blues. http://www.cree.com/news-media/news/article/cree-launches-the-industrys-brightest-and-most-efficient-royal-blue-led The phosphor ones should follow soon.

Do you know if they can make custom PCBs for 5630 (or other) sized leds? They aren't in their normal inventory but I see they have a subscription service. Otherwise I'll just wait for the new xp-g3s

May have to do with the container, lettuce likes to spread its roots horizontally. (besides the taproot)

For maximum hipster growth.

Can you do a full lime board?

The one from Platinum either uses Epistars or Epileds which are a low quality brand Stuff you expect to see in dodgy Chinese products. Citizen led is a proper Japanese brand with market leading efficiency. A 250W citizen panel from Timber is actually 250 unlike dodgy* platinum. This is a great...

They're epistar LEDs. Way overpriced. And it doesn't replace a 400W HPS. Timber is a much better value for your money. (better lights too)

Meh, how much does it cost? 500 dollars seems like an OK price, though 400 would have been better. HPS is still OK, but by this point it's just a stopgap. Same goes for current LED lights though since the tech is still rapidly improving. In 2 years current LED lights will probably be just as...

Well... That's an issue with CMH. LEDs use drivers, same shit. The bulbs actually last pretty long, not as long as LEDs. But as long as you don't have 80-90% efficient LEDs they will be replaced in a few years anyway, so a moot point currently. Nothing to do with the light, more to do with...

How much IR do you even need for the emerson effect, can't be that much since yield would be much lower otherwise.

Though phosphor LEDs do actually produce IR. 90CRI LEDs actually quite a bit. And as I've said, supplemental UV isn't hard to add.

As a supplement to the LED.

Or add an agromax UV bulb.

Even with a tiny bit of airflow it's already cool enough to hold it for a longer period and unscrew it. (the 100W) Without it gets too hot to touch comfortably. Just tested it with my own 13W (1521 lumen 2700K) bulbs. 20W Osram Parathoms aren't bulbs you want to touch. Maybe with an airflow of...