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They are much more efficient than the B and D versions (50v and 36v)

Will run up to 75 watts passively with these https://northerngrowlights.com/collections/all/products/sst133-passive-heatsink

HLG-240H-C1050B will do 3 at ~72 watts each. http://www.mouser.com/ProductDetail/Mean-Well/HLG-240H-C1050B/?qs=EaAZLd8vSkhdBhJosvNDdg%3D%3D

Then you would want to get the 320 2100B version to run 4 at 75 watts each and put a quality 100k ohm potentiometer on it. The A version has a dimmer pot on them I believe, takes a screw driver to adjust. They oos on mouser...

Yeah, D's, ~36volt. What wattage did you want to run them at? volt x amp will give you the wattage per cob when wiring them in serial. so the 1400 driver will run them at ~50 watts each, the 2100 ~75 watts and the 1050 at ~35 watts each. Have to look at the max voltage of the driver to find...

which cob? B C or D vero 29 gen 7s? What wattage did you want to run each one at? (C's are the most efficient at ~68 volts)

yep, definitely an overkill, but works great though, was only 15 bucks on amazon, used 3 of them so far, since then they upped the price a couple bucks in the past week. Yeah, the fans I used only pull a watt or so each lol

I used these fans, the heat sinks I am using from northerngrowlights has screw posts for 50mm fans, these screwed right in. https://www.amazon.com/gp/product/B01DNTJ2US/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1

I have built a few fixtures that are using vero 29's running at 100 watts each on 133mm pin heat sinks. I attached a 50mm fan to each heat sink and it the hottest point of the heat sink is 104 F.. I am using one of these to power 10 of the 12v 50mm dc fans, it pulls like 14 watts from the wall...

5-7 ml a gallon seems like a lot to me, especially with tap. I am using ro water with canna coco line and I use 2 to 4 ml a gal of calmag.

I run a mix of hps, cobs and cmh in my flower room.. the best looking plants in the room are under the 630 watt de cmh lights.. they are so green and beautiful looking, even strains that struggle a little under the cobs just look amazing under cmh. Everything else looks good as well but not as...

nm , riu worked. I needed some veg lights for a 4 x 8, ordered some citizen clu48 1212's, 8 of them and will be running them at 50 watts each.. only have used vero 29's and 3590's in the past.. I assume these are perfectly adequate for veg? hope so, all parts ordered already haha

Is there a current discount code out there for cobkits? thanks all

Finished the 10 cob 80 CRI 3000k Vero 29 Gen 7 Cs.. here are the numbers at 24" Its pulling 1078 watts at the wall.

I am using C version vero 29's, they are ~68 volts, I am running them at ~95 watts each. If you were to run 35v veros at 1400ma you would be running them at ~50 watts each. But I it looks like I could run 6 of the C's at ~100 watts each off one of the 480's maybe, which is a nice option. It...

I have 11 left right now (need 5 to finish the 80 cri light). 4 of them were 89k and below!! 5 were 101-105k and the other 2 were 99.5k and 100k. Fuck, I have used like 15 or more of these things in the varies lights I have. I bet a handful of them are only running at 90 percent then, ffs.

Anyone know approx how many percent this apogee sensor is off with leds? Is it safe to add 15-20 percent to these numbers to get more accurate numbers? I know it will be different for each led tested but does anyone know if adding 15-20 percent would still be a conservative number?

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Okay, here are the results of the 90 CRI light Here is the grid and the black dots are where I took measurements from. I took more going down the 2' 3' 4' grid line and the measurements were mostly the same in many spots, so I took just stuck with the spots shown here. Had I taken...

Fans mounted and all wired up. Need to flip it over and mount all the cobs and wire them next.