New to diy and overwhelmed

Cold$moke

Well-Known Member
@Serva

The guys at ledgardener said with 16 f series doulbe strips i could cover 8x8 with 30w/sqft at 50or 75% power

So i figured i would buy 4 and put 2 oneither side of my light with my driver somewhere accessible

Then l add another 4 and driver then another till i hit 16 to24 strips

But that is months away still

Im just trying to peice the first one for the feel of it lol
 

Randomblame

Well-Known Member
Thanks

Ok so I'm using a gavita as a heat source and main light its a balanced spectrum but still very hps looking

Would i be silly to throw something lime a 4000 inther to whiten up the color a bit?

This is mainley a flower room but since my veg room is small i veg in the flower room too until its flip time

Thanks again
No, 4000°k is nice to supplement an HPS.(2200°k)
In case of CMH315 for instance it has been proven that the 4250°k plants had better resin coating compared to plants grown under 3100°k.
Also deep blue to purple light helps to keep the plants healthy because it stimulates antioxidants so that the plants are able to perform their functions more efficiently.
 

Cold$moke

Well-Known Member

Cold$moke

Well-Known Member
No, 4000°k is nice to supplement an HPS.(2200°k)
In case of CMH315 for instance it has been proven that the 4250°k plants had better resin coating compared to plants grown under 3100°k.
Also deep blue to purple light helps to keep the plants healthy because it stimulates antioxidants so that the plants are able to perform their functions more efficiently.
Thats what i was hoping to hear kinda like the REV saying some strains express different with mh and hps
 

canadian1969

Well-Known Member
This is what @tomate calculated:

EB Series Gen2 3000K

QER=4.84 µmol/J
LER=331.66 lm/W
= 2.55 µmol/J

F-Series Gen3 3000K
QER=4.86 µmol/J
LER=321.60 lm/W
= 2.54 µmol/J

25.8W * 2.54 µmol/J / 14.48$ = 4.53 µmol/$
————————————————————————————
Example 2ft for bulk prcining...

1x F = 4.53 µmol/$
2x EB = 4.66 µmol/$

10x F = 4.72 µmol/$
25x EB = 4.66 µmol/$

25x F = 6.08 µmol/$
50x EB = 4.83 µmol/$

50x F = 6.08 µmol/$
100x EB = 4.91 µmol/$

@Cold$moke aslong you need less than 50x 2ft EB strips I would stay definitely with Bridgelux. Bulk prcining will give you a nice diacount on the F-series, when you buy more than 25 strips. So it‘s cheaper to buy F-series, but EB strips will still have the advantage of more diffusity (so more efficient light use).
Is this comparison without any heatsinking costs?
 

Serva

Well-Known Member
Is this comparison without any heatsinking costs?
No need for heatsinks, atleast not for EB strips up to nominal current! I am using simple alu frames, same as wood (open space). They are always warm to the touch, never hot (50-100% of nominal current).
 

Chip Green

Well-Known Member
Fully naked-16x 3000K EB 560mm, running on an HLG 240H-C700B, has 357v available cold start, after running up to full temp(over 1 hour) the voltage was 356......less than 1% droop....

And those are Gen 1 EBs......


EDIT:typo 16x not 15
 
Strips are currently the latest craze.
For wiring simplicity I would recommend to use twelve Samsung F-Series strips in 4ft. double row layout (288 diodes each, like a QB in long) and 4x HLG-240H-48A(best bang for the buck).
3 strips per driver in parallel means ~1,73A per strip or 96mA per diode(16s18p). This leads to an effiency of ~175lm/w or ~2,6μMol/J. A quick comparision shows a CXB3590 needs to run @700mA to reach this point of efficacy. And because the strips run at only 77% of the rated current you will need no heatsinks, only a frame or an alu-sheet to mount the strips on. Pretty easy to build and you have 4 independent 250w lamps, each ~280w at the wall.

Hey Randomblame,
You have 3 strips per driver, can i add another strip to that same driver, and still not use heatsinks???
And What would you think the effiency LM and total watts??
Thanks for your time,
Don
 

Randomblame

Well-Known Member
Hey Randomblame,
You have 3 strips per driver, can i add another strip to that same driver, and still not use heatsinks???
And What would you think the effiency LM and total watts??
Thanks for your time,
Don
When you use parallel wiring you can theoretically add as much as you want.
Lets say you use an HLG-150H-48 (3,15A) and 3 double row F strips connected in parallel. Each strip would get 46v and 1,05A and run with ~50w. When you add another strip the driver current(3,15A) is divided by four, each strip gets only ~790mA and will run at ~38w. Still 150w total but efficiency goes up from 170lm/w to ~177lm/w. The lower the current the more efficient they will be. Add a 5th strip and each strip gets 630mA and eff. would be ~183lm/w. With 6 it would be 525mA and so on. No need to mention that the cooling effort is much lower with less watts. You can glue the to grandma's backing pan or an simple alu sheet. I prefer alli c-channels. Bridgelux EBgen2 series can run completely without heatsinks, high powered F-strips(+700mA) need at least something like a backing pan to keep them cool.

With series connections you need to use as much voltage as possible. An HLG-185h-C1050 has for instance 190v and a constant current of 1050mA. The current is okay for double row F-strips but you need 4 strips to use its full potential(4x 46v= 184v, 6v headroom). If you add another one it would start blinking because of its over voltage protection. And its minimum voltage is 95v so two strips in series is the minimum but you would only get 100w instead 200.
Parallel wiring is more flexible and al!ows you to increase the efficiency later by simply adding more strips. And this could be cheaper than buying newer generations to interchange them against the old ones. My 20 single row F-strips(nom. 1120mA) run only at 450mA now, ~190lm/w according to Samsung engine calculator. Thats ~2,75μMol/j(w) and ~2,55 system efficiency.
 
When you use parallel wiring you can theoretically add as much as you want.
Lets say you use an HLG-150H-48 (3,15A) and 3 double row F strips connected in parallel. Each strip would get 46v and 1,05A and run with ~50w. When you add another strip the driver current(3,15A) is divided by four, each strip gets only ~790mA and will run at ~38w. Still 150w total but efficiency goes up from 170lm/w to ~177lm/w. The lower the current the more efficient they will be. Add a 5th strip and each strip gets 630mA and eff. would be ~183lm/w. With 6 it would be 525mA and so on. No need to mention that the cooling effort is much lower with less watts. You can glue the to grandma's backing pan or an simple alu sheet. I prefer alli c-channels. Bridgelux EBgen2 series can run completely without heatsinks, high powered F-strips(+700mA) need at least something like a backing pan to keep them cool.

With series connections you need to use as much voltage as possible. An HLG-185h-C1050 has for instance 190v and a constant current of 1050mA. The current is okay for double row F-strips but you need 4 strips to use its full potential(4x 46v= 184v, 6v headroom). If you add another one it would start blinking because of its over voltage protection. And its minimum voltage is 95v so two strips in series is the minimum but you would only get 100w instead 200.
Parallel wiring is more flexible and al!ows you to increase the efficiency later by simply adding more strips. And this could be cheaper than buying newer generations to interchange them against the old ones. My 20 single row F-strips(nom. 1120mA) run only at 450mA now, ~190lm/w according to Samsung engine calculator. Thats ~2,75μMol/j(w) and ~2,55 system efficiency.

Thanks for the quick response!!! I will be running 8 strips total, on two drivers, should i use 2 of the HLG-150H-48a, or should i use the hlg-240h-48a??
Or should i just get one larger driver?
Also, what do you think the P.P.F. would be for both??
Sorry to be a pain, but THANKS for your time!!!!!
 

Vd22

Well-Known Member
So is running 400 watts with 80% powered leds better for plants or equivalent to running 400 watts with 65 % powered leds

I want to fit 400-600 watts in like 2' x 3'
Maybe 3' x 4'
Is that possible at 65% powered leds?
 
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