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I think we should try to move away from Watts per square foot, I know people like using it because it is a simple way to quantify the amount of power being output, and everyone can do the calculation, but realistically it is essentially meaningless because the watts need to be par watts. I think...

With COBs, builds are easy, anyone with sense is going to simply start building there own lights in house to have maximum control over design and keep costs down.

Glued? I would be interested in pictures and a more complete explanation.

The Vero's can stand a bit of heating up before they get fried, I had some issues and ran some Vero 29s for 2-3 hours without the fans running and they did not die. I would not suggest this, but lets just say you are going to be able to smell the light heating up before the LEDs get fried. That...

I like the little plastic legs everyone has been adding to there Heatsinks/builds of late, it would make moving them around a bit simple. Very nice clean, winning.

Awesome information! I guess I was wrong about there not being a huge difference between the V1 and V2 4000k. Looks like there is less blue, which is I remember correctly would increase the stretch a bit, however, it also looks like there is a substantial increase towards the higher end of the...

I put the paste onto the COB its self, full coating of thin lines, even it out as much as possible, then place it onto the heat sink, push down and jiggle it back and forth ever so slightly to make sure it spreads out evenly. I think the biggest issue is full coverage of the die, no bubbles or...

You can mount them on just about anything! I would attach them to something rigid though and then hang off of whatever you attached them to. I think its good to show pictures of build that are not as pro as some people have made, don't get me wrong, I love some of the builds that look...

I don't think there is a huge difference between the Vero 29 4000 V1 and V2 in terms of spectral output, just increased efficiency. I think if you are looking for a solid all around light for veg and flower the 4000k is a good choice. I am extremely happy with my V1 4000k for both veg and...

These are some plants that are vegging under the 4000k. As you can see, nice tight nodes, very bushy, topped the two in back a few days ago. The ones in front just got moved from smaller pots today. These ladies are from clones, they just got hardcore trimmed two days ago and lights changed to...

Indeed Rahz you are correct the newer version seems to have closer output value per watt then the older ones: http://www.bridgelux.com/sites/default/files/resource_media/DS33-Bridgelux-Vero-29-Data-Sheet-with-increased-efficacy1.pdf

I am extremely pleased with my 4000k for both flowering and veg. The 4000k are also significantly more efficient then the lower K values, more light intensity for the same amount of power.

I honestly do not recall... I want to say it should not be an issue... But I don't want to be responsible for your build not working out as well as intended. I completely understand about drilling and tapping, its the hardest part of the entire build process in my opinion. As I have been saying...

I have had a few where I was unable to get all four holes to line up for mounting. It does not seem to have caused any major problems as of yet. It is also one of the reasons I plan to try my next build just using the kaptan tape for mounting, it should take less and effort to mount with the...

Is that kaptan tape just holding down the wires? or did you use it to mount the LEDs as well?

The COBs have proven them selves, there are many threads on this forum where people have demonstrated superior results with both the bridgelux and the Cree COBs. I used Bridgelux Vero 29's 4000k for my lights, usable for both veg and flower. On my first ever indoor grow I got .75 grams per watt...

This is one of many things that is so great about the large COB LEDs, they are simply a matter of matching up COB, Power Supply, and heatsink and then not messing up the tiny amount of wiring that needs to be done. Anyone should be able to do it considering there are so many combinations of...

Does the far red have to turn on after the main LEDs turn off? I know this might sound like a stupid question... But if you can just have the far red LEDs turn on for the last 10-15 min of the main lights then it would be a simple matter of plugging in an analog timer in the main timer and...

If anything the issue I have with the LEDs I am running is that the plants don't dry out enough (Cloth pots are a must), so I don't think it would be an issue with, temp or lack of water unless there is a major error in set up of the grow area. I currently have 5 clones Vegging under my 6 Vero...

The point I am making is that its not simply a matter of efficiency, its that the complexity of build is greatly reduced. Most people don't have the time, knowledge and equipment to build a massive light with 500 small diodes. Most anyone can wire up a few large COBs and mount them on some...