Forsure
Well-Known Member
Getting them for free would be great....but the issue would be getting to where I live in the deep south!
Are cobs worth it?
- Thread starter rshackleferd
- Start date
Forsure
Well-Known Member
Lucky you! Hopefully we will catch up on the rest of the world and realize what an incredible useful plant this is!
Growmau5
Well-Known Member
@rshackleferd no problemo man, I try to get to as many comments as possible. I am not a 'pro' or 'expert' grower in any sense of the words. In fact, I considered myself an educated but average grower from 1999-2014. Today I consider myself a good grower that relies on a balanced spectrum (matching McCree's action curve) to be successful.
I think that COBs, with their complete spectrum and high photon per watt performance make an average grower look exceptional. Kind of like when you manscape and your dong looks waay bigger and more robust.
my last run with HPS, I was in your ballpark of yield at 0.86 gpw. Nothing changed, same nutes, same grower, strains, environment, wattage (1200w of each) but my yield went up to 1.4 GPW with older tech cxa3070. So from an ROI standpoint, my entire led setup paid itself off in one run. That got me hooked on led, fo sho.
good luck in your research, I know you will find the answers you seek here on RIU. and as always, I am happy to help, PM me anytime.
I think that COBs, with their complete spectrum and high photon per watt performance make an average grower look exceptional. Kind of like when you manscape and your dong looks waay bigger and more robust.
my last run with HPS, I was in your ballpark of yield at 0.86 gpw. Nothing changed, same nutes, same grower, strains, environment, wattage (1200w of each) but my yield went up to 1.4 GPW with older tech cxa3070. So from an ROI standpoint, my entire led setup paid itself off in one run. That got me hooked on led, fo sho.
good luck in your research, I know you will find the answers you seek here on RIU. and as always, I am happy to help, PM me anytime.
Forsure
Well-Known Member
Don't be so modest! When it comes to COB's IMO you are a pro! Manscape your dong to make it look bigger and more robust?! You know that's just in your mind!LOL
It's not the size that matters it's the performance....I guess a little like COBs!
Bill Lidgate
Active Member
Maybe COBs aren't worth the bother!
Recently aluminum flex strip LEDs with 120 x 5630 SMD mount chips per meter have become available. They make 60w per meter and 5400Lm
An order of 100m of them (4000k) costs $270 on Alibaba, and the strips are 15mm wide so a 1m x 1m square could use
48 x 1m strips
You could power them with the (currently cheap) Mean Well HLG-185H-48A from BG Micro, and you'd need 16 of them (1 for every 3m) so that would cost $22.95 x 16 =$380.
You could mount them on 2" Al strips (3 per) with a few mm between them for air flow and they'd probably do fine with passive cooling (or mount a couple fans up top)
total bill < $600
for a completely even 1m x 1m light you could put so close to the plants they'd probably need no optics and it would put out 260,000 Lm (!) and dissipate 2.9kW (!!)
Recently aluminum flex strip LEDs with 120 x 5630 SMD mount chips per meter have become available. They make 60w per meter and 5400Lm
An order of 100m of them (4000k) costs $270 on Alibaba, and the strips are 15mm wide so a 1m x 1m square could use
48 x 1m strips
You could power them with the (currently cheap) Mean Well HLG-185H-48A from BG Micro, and you'd need 16 of them (1 for every 3m) so that would cost $22.95 x 16 =$380.
You could mount them on 2" Al strips (3 per) with a few mm between them for air flow and they'd probably do fine with passive cooling (or mount a couple fans up top)
total bill < $600
for a completely even 1m x 1m light you could put so close to the plants they'd probably need no optics and it would put out 260,000 Lm (!) and dissipate 2.9kW (!!)
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Chronikool
Well-Known Member
@rshackleferd .....where is this COB youtube grower....? Thanks
Growmau5
Well-Known Member
That's an interesting idea, and there could be merit to that kind of setup. You could buy, could power, could, could could could could could could coold coold cood cod Hodor.
So many you coulds! Buy it, do it, install, grow, results.
Merkin Donor
Well-Known Member
I'm pretty much an "average joe" learning the hard way and screwing stuff up left and right. If you know how to grow then I'm sure you will do just fine with whatever light source you decide to go with. Here is my grow journal.
http://rollitup.org/t/how-green-can-i-grow-in-my-copycat-garden.870678/
BOBBY_G
Well-Known Member
what kind of yield can we expect by going full retard?
Merkin Donor
Well-Known Member
About a pound, in two weeks.
Forsure
Well-Known Member
Video on page 1!3 pages with lots of claims and no video.
by the op? i beg to differ...
Forsure
Well-Known Member
Who cares where the video comes from it was actually by someone who had contributed to this post!
rshackleferd
Well-Known Member
I was mistaking in the gpw "toked up", his total from the 1500 watts amounted to 1700 grams. This is 1.1 gpw, I can get this amount all day long with 3watt diodes. Why convert? Another user told me his amount totaled .7 gpw. That is when i started to become nervous. Have also read about one guy complaining his harvest was light from these cobs. He didnt post gpw but nonetheless he was disappointed. He is now in his second grow, waiting for his results and others.
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Atulip
Well-Known Member
Someone who gets 1.1gpw with cobs probably would've gotten .75gpw with hps.
Light is light, and cobs produce more of it for less watts. Gpw is a poor way of comparing lights. If you've got light and want to upgrade efficiency, buy something that produces the same amount of light for less watts. Suddenly your GPW went up....
I've hit upwards of 2gpw, but that's SoG auto flowers on 24/0 lighting. Big old gpw but mine are on twice as long....
Light is light, and cobs produce more of it for less watts. Gpw is a poor way of comparing lights. If you've got light and want to upgrade efficiency, buy something that produces the same amount of light for less watts. Suddenly your GPW went up....
I've hit upwards of 2gpw, but that's SoG auto flowers on 24/0 lighting. Big old gpw but mine are on twice as long....
Bill Lidgate
Active Member
of note, this is exactly the set up in the new Fluence (BML) SPYDR: 0.5w 5630 SMD chips with 132 chips per "wing" but you're paying $1500 for 600w of LED.
Growmau5
Well-Known Member
I don't know if I would say exactly like Fluence. They make their own in house boards with a mix of LG, Samsung, & Osram diodes. By make their own boards, I mean they make them in house, screen print them, pick and place from factory reels of LEDs the whole process.
Regardless, like I said, this 'could' be a game changer. I am not criticizing your idea, you may be onto something. But until someone implements it and documents a grow, it is another one of the many theoretical ideas that litters the pages of these forums.
cheers
dandyrandy
Well-Known Member
I'll let you know in 5 weeks.
