Victor6634
Well-Known Member
You can see plc grows on greengenes707 youtube channel he has great plants under his new lights
IF you are new to LED and want help choosing what to buy, POST HERE!
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You can see plc grows on greengenes707 youtube channel he has great plants under his new lights
Hybridway
Well-Known Member
300 watts of good Cobbola will rock your 2'x3' for just about max yields.
Good luck! Add a few reds n cool whites in 5 watters & youll maxamize photosynthetic response & efficiency as well.
Are you buying a pre-fab DIY?
I'm looking to do the same for side-lighting. Who'd you buy from & do you recommend them to others?
coreywebster
Well-Known Member
Your choice will kick ass! (BE VERY GOOD)
Here are some figures based on the DIY COB CALCULATOR from this thread
https://www.rollitup.org/t/diy-cob-led-calculator.890214/page-8#post-12829010
Download the app from bggrass, the link is in his signature.
CXB3590CD36V3500K 6 COBS @1.4A ON 1.813 PROFILE HEATSINK
6 SQ.FT. CANOPY 93% EFFICIENT DRIVER @11 CENTS PER KWH
Total power watts at the wall: 315.05
Cobs power watts: 293
Total voltage forward: 209
Total lumens: 53484
Total PAR watts assuming 10% loss: 149
Total PPF: 692.85
PPFD based on canopy area: 1242.96
PAR watts per sq.ft.: 24.83
Cob efficiency: 56.34%
Power watts per sq.ft.: 48.83
Voltage forward per cob: 34.89
Lumens per watt: 182.54
Heatsink riser thickness / number of fins / fin's length: 0.3in/6/0.95in
Heatsink area per inch: 100.94 cm^2
Total heat watts: 128
umol/s/W / CRI: 4.65 / Estimated
Heatsink length passive cooling @120cm^2/heatwatt: 152 inches
Heatsink length active cooling @40cm^2/heatwatt: 51 inches
COB cost dollar per PAR watt: $1.92
Electric cost @12/12 in 30 days: $12.98
Electric cost @18/6 in 30 days: $19.21
Cost per cob: $47.62
Heatsink cost per inch cut: $0.66
Total cobs cost: $286
Total heatsink passive cooling cost: $100
Total heatsink active cooling cost: $33
I made up the driver efficiency and cost of kwh because I don't know your figures. But you will do very well with your selection.
Lenses or reflectors or bare will work but I imagine there are arguments for either lense or reflector.
Hopefully more cleverer people than me can discuss this with you.
Happy building and happy growing!
Hybridway
Well-Known Member
Great break-down. You did that w/ the cob calculator? Neat stuff!
I'd think if he had the ceiling height, lenses would be the way to go. Less light loss to the walls & more light to the plants.
When I received my Amare specs, I couldn't believe how much higher the PPFD was w/ the lenses. I wanna say, it was like 1/3 more density/intensity I believe. Ridiculously high #'s.
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coreywebster
Well-Known Member
Yeah Hybridway, its an awesome little tool, it makes dumbasses like me seem like I know what I'm talking about.
Its very addictive playing around with different selections, although it may need some updating with the new Citizen Gen5s.
I suspect your right with the lense but me not having any real world experience with them I figured I would leave my opinion out.
I'm no N.G though
just not committed to a specific build yet. Cutters sale is making my button finger twitch! It may be time
okletsgrow
Member
hi guys,
i think i'm going to take 2 hlg 150 36A. and for the heatsink LPF11180-CUT 
have you some link or more information for the "few reds n cool whites in 5 watters "
for the sellers i don't say if i choose kb or cutter
cheers
@ coreywebster thanks guys for you return and your programme but i don't work with bill gate
i think i'm going to take 2 hlg 150 36A. and for the heatsink LPF11180-CUT @coreywebster i'm going to full diy
have you some link or more information for the "few reds n cool whites in 5 watters " for the sellers i don't say if i choose kb or cutter
cheers
coreywebster
Well-Known Member
@Hybridway would probably be able to answer that question better than I would.hi guys,
@ coreywebster thanks guys for you return and your programme but i don't work with bill gate
@coreywebster i'm going to full diy
for the sellers i don't say if i choose kb or cutter
cheers
You could try mouser.com
I'm sure there are many places, cutter.au should have something. You can speak directy to Mark on here welight is his username.
Have a look at growmau5s builds on youtube, I know he adds far reds.
The cob calculator should work fine on windows, you just need java installed and you need to download it from the dudes signature and not from the link on the page. This is his link https://www.dropbox.com/s/csny22u6yrpptaj/DIYCOBLEDCalculator.jar?dl=0
Good luck
Edit, sorry I misunderstood. You mean you don't use windows... lol
no worries. If you want any further calculations doing for those cobs at different Amps just message me and I will run it through and give you the numbers!
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coreywebster
Well-Known Member
No, based on one cob in 1 square foot. That would give you around 650 PPFD, 1.05A would give 1001 PPFD and 1.4A would give you 1251 PPFD (this is still 56.34% Efficient). There are no figures for 1.2A on the calc but i guess that would be around what you are looking for.
So you could have more cobs and run them soft or just run fewer harder to achieve that number.
slow_grow
Well-Known Member
Hey guys, it turns out that gogreen is still running the 4th of July promo which means that one could get their 300W (CXB3070 based) unit for precisely $49.70 less than Timber's 300W (CXB3590 based) DIY and $107.65 (shipped to U.S.) less than Cutters MAU5-V (250W closest comparison though) DIY kit.
They offer a 5 year warranty so although the drivers are undisclosed (I searched but couldn't find specifics) long term coverage still exists all in a ready to hang enclosure.
What am I missing? This seems that depending on which side of the fence your on regarding 3590 vs 3070, it could be a no-brainer. What are your thoughts?
They offer a 5 year warranty so although the drivers are undisclosed (I searched but couldn't find specifics) long term coverage still exists all in a ready to hang enclosure.
What am I missing? This seems that depending on which side of the fence your on regarding 3590 vs 3070, it could be a no-brainer. What are your thoughts?
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Hybridway
Well-Known Member
@Airwalker16 could tell you about his GoGreen that he just packed up to replace w/ an EcoSun.
He didn't seem super pleased w/ it & I heard the drivers were no-names. But don't quote me on that, ask him. He knows.
http://www.bcblondes.com/category-s/100.htm
Is less money then half these pre-fab DIY, is top-bin w/ MeanWells. That's the light is get if I were on a budget. 3590 or 3070 models available.
They sell Cobs & drivers too.
Another thing to keep in mind, is Amare's usually offering a 25% off sale. Not sure if they are now, but definitely worth asking. After the sale, I hear people getting the SE-450 for only $900. That's DIY pre-fab pricing for so much in a light & many to choose from.
Their web-site is under construction or something but here's their old one.
Personally, I think they're the best.
Amare
www.amaretechnologies.com
Good luck!
Airwalker16
Well-Known Member
The GoGreenLED is a decent light. It doesn't use anything special for drivers. They are no name Chinese ones. But uses top bin 3500k 3070's. The only reason I didn't like it, is because it created hot spots when I added it to my current diy light. I bought a model that the lenses are PART OF the reflector and I could not remove them. @BM9AGS also owns one and when he opened the case, his lenses just "fell off". Lol. Had my unit had the luxury of removing the lenses, I would have continued using it more for sure. It's a good light, but needs to be AT LEAST 18" from the canopy or you're gonna get some bleaching. It actually covers a 3x3 area very adequately in my opinion. But then you have people like @Traplife using 4 of these MF's in a 4x4. Lol. Maybe both of them will chime in.
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Thanks! How did you get these numbers I should be able to do this
coreywebster
Well-Known Member
They come from the DIY calculator app which has its own thread on here. Made by bggrass using SupraSPL data.
To save me looking for the thread again here the direct link which should work. Download it and make sure you have JAVA installed.
https://www.dropbox.com/s/csny22u6yrpptaj/DIYCOBLEDCalculator.jar?dl=0
All credit goes to bggrass and SupraSPL.. I am just a guy who likes playing with his tool too much
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Greengenes707
Well-Known Member
You need to stop flip flopping. Your not helping anyone be one way(pissed and hating the light and company) for your self...
But then recommending it as OK for others...
It either is or it isn't.
Airwalker16
Well-Known Member
It is a good light like i explained. If it's high enough. I didn't have the right height and the way it was centered within my diy created hot spots. So for m, I couldn't use it. Had I been able to remove the lenses, it would have been better for me.
hockeybry2
Well-Known Member
My go green 300w is a solid light. Really enjoy mine as well
GroDank101
Well-Known Member
Wanting to go with a 4x4' or 4x8' tent. Could I use 8 cxb3590 for 16 sqft, aka the 4x4'?
Could I use 16 cxb3590 for the 4x8'?
Could I use 16 cxb3590 for the 4x8'?
a mongo frog
Well-Known Member
Can you do 15 in a 4x5 and take on a DE lamp? Please say one can......
Airwalker16
Well-Known Member
I did the 4x4 using 8 cxb3590's @73watts ec with great results.
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