REALSTYLES
Well-Known Member
I'm thinking a 3x3 easily let me finish the light and I can give you a more definite answer.
IF you are new to LED and want help choosing what to buy, POST HERE!
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Victor6634
Well-Known Member
Thank you
Vato_504
Well-Known Member
Don't tell me this man you'll get my hopes up.
Hybridway
Well-Known Member
As long as you got the skills, decent strains, you got that all day! That's average good yields there.
Rahz
Well-Known Member
I've seen 21 O from a 400w lamp based on Gen5 Vero 29s. 42% efficiency by running them at low current. Current cob technology almost 3 years later is better than that at nominal current.
The output on that lamp was 350 watts, and at 42% efficiency it provided 147 par watts. 588 grams / 147 = 4 grams per par watt. If you know your par wattage then you can get an idea of what a yield expectation can be, 3.7 - 4 or maybe a little more per par watt if everything is straight.
GroDank101
Well-Known Member
I want to build a new light for my 2'x2'. I already have a spare hlg 185 c1400B. I want to go with a single heatsink between 16-20" but as short as possible, maybe even pin heatsinks with aluminum angle. Would 2 cxb3590 at 72v work for this setup?
I plan to put a PC fan on it for cooling. does this sound good or would you guys change some things? It's going to be for a veg tent.
I plan to put a PC fan on it for cooling. does this sound good or would you guys change some things? It's going to be for a veg tent.
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Rahz
Well-Known Member
For a 2x2 veg I would use the 36v version. 56% efficiency and plenty of light. If you run them at 1.4 amps it's not out of spec but efficiency will suffer for more light than you need.
GroDank101
Well-Known Member
Rahz
Well-Known Member
There's a chance of going under the min voltage but I suspect they will fire up. Or go with three and a pot and cut the current down til you're just under 110 watts. That would give you about 60 par watts, about the same light as running 2 72v at 1.4 amps. More than enough to flower under. For veg you could actually turn them down to 80-90 watts and be happy with it.
GroDank101
Well-Known Member
what do you mean by 3 and a pot?
I'll probably run 3 to make sure I'm not running too low voltage.
so now I just need a good dimmer. I've never had a B version. is it difficult to attach the dimmer?
GroDank101
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Smee23
Member
Hiya guys I've recently moved in to indoor growing and bought a cheap LED to get going. I'm getting good results but think I need an upgrade now. I'm looking for a veg & flower function with the light to penetrate my stealth box 130/60/60 cm. I have around £250-350 to spend. I know it's not going to be a top of the range but please all advice is greatly appreciated
Big smo
Well-Known Member
I will be threatened with spamming if I say what I prefer.
except that nextlight and fluence are showing the value of smd chips which are not cobs. but otherwise I agree.
JorgeGonzales
Well-Known Member
And Samsung and Philips, for the DIYers. Also, Fluence's PPFD footprint is almost unbelievably uniform.
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