kelticBlue
Well-Known Member
Super nice looking, Did you add the plastic bumper on the end, or are they standard on alum. tube? nice touch!
The DIY COB Addiction
- Thread starter jimmyclone
- Start date
Super nice looking, Did you add the plastic bumper on the end, or are they standard on alum. tube? nice touch!
Super nice looking, Did you add the plastic bumper on the end, or are they standard on alum. tube? nice touch!
The plastic plugs/caps you can find online, you can also avoid the caps by using 90degree two way tube connectors.
kelticBlue
Well-Known Member
cool beans luv the tube, i used L channel about a year ago. i am always looking at everyone builds, the framework especially.
here is a pic from the diy also in my sig. 200 watt cree cob, i enjoy the build.... no-where near as clean as yours. cheers.
here is a pic from the diy also in my sig. 200 watt cree cob, i enjoy the build.... no-where near as clean as yours. cheers.
LB07
Well-Known Member
So I'm currently trying to light my 4x4 flower tent and I have been lurking in a thread that you are fairly active in. You seem like myself where you maximize every dollar. Currently I'm looking at this on rapid led. Am I doing things completely wrong? Please help!!
Fsanti1226
Well-Known Member
So I'm currently trying to light my 4x4 flower tent and I have been lurking in a thread that you are fairly active in. You seem like myself where you maximize every dollar. Currently I'm looking at this on rapid led. Am I doing things completely wrong? Please help!!
Wrong driver you will only be putting out about 50 watts per chip with that driver step it up to a 240-2100b more than enough voltage with the maximum current rates will be close to 80 watts a chip.
LB07
Well-Known Member
Where would that put me in efficiency range?
Fsanti1226
Well-Known Member
I have a 320-2100b powering 4 vero29se at 75 watts a chip. And a 240-1400b powering 5 @ 50 watts a chip.
I should've waited and got the 100watt chip they just came out with. I'll get those for my next light setup.
I should've waited and got the 100watt chip they just came out with. I'll get those for my next light setup.
Fsanti1226
Well-Known Member
Probably drop it down to 94-95% range as oppose to 98% I believe.
Fsanti1226
Well-Known Member
Also look into quantum boards by horticulture lighting group. They make sum badass led kits that put sum ppfd.
LB07
Well-Known Member
I recently tried out 8 COBs driven at 30W each for a total of about 240W.
After 5 individual harvests, (3 substantially equivalent clones of their clone mothers,) this was not enough to match the yield of the 600W HPS that previously occupied this space.
I'm not unimpressed, yield was 60-70% at less than half the wattage.
What target wattage would you recommend per 10 sq ft of flower area?
After 5 individual harvests, (3 substantially equivalent clones of their clone mothers,) this was not enough to match the yield of the 600W HPS that previously occupied this space.
I'm not unimpressed, yield was 60-70% at less than half the wattage.
What target wattage would you recommend per 10 sq ft of flower area?
LB07
Well-Known Member
Which cobs and drivers?
Pick your own. I'm not going to quibble about 10% difference in PAR here, just looking for a ballpark number of COB watts per square foot to give a good yield.
LB07
Well-Known Member
I'm eventually aiming for around 50w per sqft.
I was confused by your question. I apologize.
I was confused by your question. I apologize.
Fsanti1226
Well-Known Member
How does this setup look?
Go with a bigger driver like a hlg480-1400 if your going to run 9 cobs your going to be working that 320 driver pretty hard as oppose to a 480. Also gives you more room to add more cons down the line.
LB07
Well-Known Member
That is running on a 480.
LB07
Well-Known Member
Long story short, sorry for all of the confusion. I think I've decided to run 7 class "D" vero 29 3000k 90 cri on a hlg480-1750. I'll buy the 4x4 substrate made up for 14 cobs and 2 drivers. Eventually I'll buy all 14.
Fsanti1226
Well-Known Member
If your trying to run cobs instead of qb boards in a 10 sq for area. I would go with 16 vero 29 se 80 cri c series chip with 2- 480-1750b drivers / 1-240-1750b driver. For a total of 1600 watts. That would cover a 10 sq ft area pretty well and with sum good lighting probably wouldn't even have to turn those fuckers all the way up. Those c series chips at 1750ma put out about 110watts per chip. They just hit the market.
Fsanti1226
Well-Known Member
3500ks would be your best bet on color temp
Thanks - I didn't mean to sound rude about it. The COBs were a gift from a friend who said try them out since they seem to work good for him, but I grow thicker canopies that need more light penetration and have a few more grows under my belt than he does.
After a 6 month trial they weren't bad - the meanwell drivers are labelled and the chips are glued to heatsinks and about all i know is they aren't Vero29s, are probably generics, and that about 27 per square foot is not enough. My gut feeling was the light probably should be doubled, and a 50W per sq ft is about double 27 watts.
Thank you, I appreciate you quick and knowledgable answers.
No need to apologize - I'm the one who was snarky (based on my ignorance of how to answer the question.) - so please accept my apology.