GreenMotion Starting out "first led build"

Hey there guys,

I have been reading up on leds and this seems the place where people are most informed. I am planning to build multiple leds over the coming months and this will be my first build. For now i would like to have you opinion on the best way to go.
So first the situation:
-Want to build it on the cheap
- Effieciency > par
-90*90*140 space
- Should be flowering light
Got already:
- Got a old "blurple" crap light with 150 w draw ( will find out all the specs and post them)
- tools
- (almost) unlimited supply of cpu heatsinks

For the first part i would like to focus on choosing the electronics for the light. I was doubting a bit between the new vero 29 gen 7(BXRC-35G10K0-C-7X) and the citi (CLU058-1825C4 or CLU058-3618C4). Also was doubting about a mix with just 1 CXB3590 and couple of smaller leds around.

For the driver i am leaning to buying a meanwell because they just seem very stable and efficient, but always open to suggestions. should be something like the hlg-185h-48a to get the efficiency by pushing a low current. Would prefer wiring in series.

Looking forward to your suggestions.

Shopping list:

7 * CLU-048 -1212 in 90 CRI at 3500k

http://cobkits.com/product/citizen-clu048-1212-90cri-choice-of-color-temps/

1* artic thermal sheet

http://cobkits.com/product/arctic-thermal-pads-uncut-145-x-145mm-sheets/

1 * driver at 250 v 1050ma

http://cobkits.com/product/meanwell-hlg-240h-c/

1* thermal paste

http://cobkits.com/product/arctic-mx4/

Want to connect this in series would this driver and cobs match? Wat kind of efficiency and heatwatts could i expect of this setup? I am looking at multiple heatsinks put would rather have the numbers so i can be confident in my decision.

Ps will be posting the build and any things i run into in the thread maybe some of you find it worth seeing

Kinda need to understand what the 90x90x140 means inches cm feet what you dont have a unit of measurement
Also dont think your going to get 7 leds on 1 driver.
I used cm that was 35 inches so i rounded up to a even 36" square and the led calculator and got

Citizen.1212C4.3000K 7 COBS @1.05A ON 5.88 PROFILE HEATSINK
9 SQ.FT. CANOPY 92% EFFICIENT DRIVER @10 CENTS PER KWH
Total power watts at the wall: 279.35
Cobs power watts: 257
Total voltage forward: 245
Total lumens: 39835
Total PAR watts assuming 10% loss: 109
Total PPF: 529.74
PPFD based on canopy area: 633.56
PAR watts per sq.ft.: 12.11
Cob efficiency: 47.09%
Power watts per sq.ft.: 28.56
Voltage forward per cob: 35.0
Lumens per watt: 155.0
Heatsink riser thickness / number of fins / fin's length: 0.27in/14/1.0in
Heatsink area per inch: 260.01 cm^2
Total heat watts: 136
umol/s/W / CRI: 4.86 / 80CRI
Heatsink length passive cooling @120cm^2/heatwatt: 63 inches
Heatsink length active cooling @40cm^2/heatwatt: 21 inches
COB cost dollar per PAR watt: $0.81
Electric cost @12/12 in 30 days: $10.56
Electric cost @18/6 in 30 days: $15.58
Cost per cob: $12.55
Heatsink cost per inch cut: $1.74
Total cobs cost: $88
Total heatsink passive cooling cost: $110
Total heatsink active cooling cost: $36

dabbing_solutions said:

Kinda need to understand what the 90x90x140 means inches cm feet what you dont have a unit of measurement
Also dont think your going to get 7 leds on 1 driver.
I used cm that was 35 inches so i rounded up to a even 36" square and the led calculator and got

Click to expand...

Thank you very much sir this cleared things up a lot for me. Yes my measurements are in CM next time i will convert then to inch and put this also to the post for america. I am hailing from the Netherland where everything is old fashioned as always, people really dont do anything else then growing under philips HPS. Want to change that up a bit.

So this setup wont work because the driver is not pdoucing enough V to deliver the 35 fV to the individual leds? (wiring series)

And i was planning to try and push the efficiency a bit higher is this just not happening with these kind of smaller citi leds or am i missing some vital stuff?

Last night i spend a long time on the forum and safety seems a (legit) concern for some of the members, so i will just state for the record that i will be building the fixtures together with a electrician who knows his stuff.

Ps. Put some SSD vegging under a Fluence to catch you attention