New Vero and Cree Cob build.

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Dogg1

Member
Here is the latest build .
263 watts of lamps
24 watts of cooling x 2 apv 12-12.

The outside lamps are Cree 3070 cxb,@2700k drawing 50 watts. They are being powered by 1500 milliamps drivers.
The center lamp is a Vero 29 which I have under driven using 900 milliamps. This results in a 37 Watt draw. This is an older repurposed Vero from 2018. 2700k. VERY RED
All three fixtures have 60 mm DC 12 volt fans with appropriate drivers.
The purpose of the build was to try and eliminate a hot spot that I find so often in multiple lamp cob fixtures. By underdriving the Vero which people usually run pretty hard, I'm able to spread the light very effectively over a 2x3ish area.
Using a par meter app on my Google pixel 8 pro, I'm seeing 1,000 plus PP numbers over the entire 3x3 area shown with the plants at anywhere from 9 to 12 inches below the lamp. I'm very surprised at the consistent canopy numbers using the two very different lamps side by side. Spectral difference between the Cob array at 2700 and the spider farmer 200 w SMD board in the back which is near 4000 is quite obvious.
Drivers are remote on a panel hanging on the side of the tent receiving cooling air from the discharge 6 in from the whole grille. Cool to the touch and no flickering. This seems successful.

Next build will be two 90 watt cannons.
Vero 29 2700k deep red
Meanwell drivers.
180 wat 2x2 spotlight.
Thanks for stopping by. I'm open for questions and compliments.
 

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Dogg1

Member
Just a little LST, I jacked up one branch but the others are okay. Plants are doing great with 7 days flowering under their belt. They definitely got the message loud and clear. Again these are frozen black cherry indica genetics. It's a very congesting plant short, with many branches. These can turn into shrubs as you all know real quick. Tonight I scrubbed out the insides and laid everyone over a little bit. 8 weeks to go
 

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Rocket Soul

Rocket Soul

Well-Known Member
Dogg1 said:
Just a little LST, I jacked up one branch but the others are okay. Plants are doing great with 7 days flowering under their belt. They definitely got the message loud and clear. Again these are frozen black cherry indica genetics. It's a very congesting plant short, with many branches. These can turn into shrubs as you all know real quick. Tonight I scrubbed out the insides and laid everyone over a little bit. 8 weeks to go
Click to expand...
Ok, now i see, two lights :) 80 or 90cri on the cobs?
 
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Dogg1

Member
Mr. Soul, the CRI is 80. These Veros are from an old Optic 4 lamp and were originally shelved because of that exact CRI. I had made a move to full spectrum growing and had sort of tossed these aside, beside one of the four wasn't working in the Optic unit leaving me for a project later. Very close to HPS in visually represented light. The vero's flower awesome, but do leave a little to be desired if you're looking for a single lamp full cycle grow. (As I'm sure all of you know at this point)
 
Rocket Soul

Rocket Soul

Well-Known Member
Those really old Veros had a especially red spectrum, i remember old threads when they were tested by Supra, Bobby G and cobkits and their numbers went right up with more reliable Licor testing. Ive done a lot with the 90cri version of 2700k and still have some 2200k solstrips tucked away somewhere collecting dust.
What was your spectrum growing experience like? Is it anywhere onsite?
 
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Dogg1

Member
I do remember reading Supras updates back in the day, One of the reasons I went with the optic Vero was four independent drivers and the fans were split. Along with that deep red,.
I haven't posted much online in the last 8 years or so, Little YouTube here and there. My channel doesn't receive much attention but a few of my videos have blown through the roof near 100,000 views. That told me there was a lot of information lacking on what I was posting. (At the time California light works and kind LED videos).
I noticed while growing with the kind X6 that the plants on the very edge of the tent always had the most flavorful and colorful buds. So I threw up another tent in the closet of my apartment and put in an adjustable Spectra kind lamp.
The closer I got to a higher CRI the better my plants looked and the quicker they finished. Pushing me towards a more neutral Kelvin reading for growing in general. , (at the time, full cycle grows from one lamp we're few and far between and mostly on a custom level here).
Looking at the available lamps at the time told me I had to build them, I took a 3,000. Kelvin CXA3070 and set it in between two 4000K 3070's. That lamp drew 300 w even at the wall. 88 for each lamp and 12 for the fans on each one.

That experience changed! That lamp could take a seat and finish flowering the same plant without moving it. From there I focused on white light flowering as best I could. But these veros always nagged me to be thrown in a tent somewhere to enhance something.
 
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Dogg1

Member
I've used those exact 4K Vero 29s at 90 with these, with remote ballast and a meanwhile apv-12-12 running your fan, the lamp is cool to the touch while the ballast outside the tent is quite warm.
 
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Jonesfamily7715

Well-Known Member
Dogg1 said:
I've used those exact 4K Vero 29s at 90 with these, with remote ballast and a meanwhile apv-12-12 running your fan, the lamp is cool to the touch while the ballast outside the tent is quite warm.
Click to expand...
I know right, drivers cause more heat than the fixture most of the time. I try to get my heatsinks on heatsinkonline.com they got some decent deals, I also like the active mechatronics heatsink they sell on cobkits.com, they say it can handle 400 watts but it's not true, 185 is pushing it, I roasted a clu058-3618 citizen cob at just over 200w, it overheats the fan till it shuts down and there goes your cob. But when everything cools back down your fan will run again. I used one of those Amazon sinks before still have it, do you use the lens?
 
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Dogg1

Member
The lens is up for debate. I've had wonderful girls with them and without them. (Currently none of my fixtures have a lens) .02$
 
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Jonesfamily7715

Well-Known Member
Ever try liquid cooling your cobs? I've been wanting to give it another go. It works, just when something goes wrong your fucked. I wanna try putting on a switch shuts the light off if water stops flowing, cuz that's exactly what happened last time pump failed.
 
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Dogg1

Member
I keep chips under 100 watts, I don't remember having a failure due to overheating so spending the money on a big cooler like that for me doesn't work. I've had fans fail on 50 w chips and had them go a cycle or two with just passive cooling from air movement in the tent. That advantage is saved only for lower wattage applications. Again keeping me away from the larger coolers
 
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Dogg1

Member
*UPDATE, The plants are digging on the cob builds, The cree and Vero combination lamp where the center Vero 29 is under driven is performing amazing plants. Have been praying since I put it in!
Additional lamp has been added which consists of two Vero 29s on round solid heatsinks. These are cooled with 12 volt fans sharing an apv 12 – 12. The drivers are meanwhile lpf-90-42s. This gives a wattage draw of 89 with one lamp and 91 w with the other. I mounted them on welded tabs to a small piece of square tubing, I wanted the ability to swivel the lamps independently as focused spots. I think it came out okay and everything seems to be working.
Thanks for checking in
 

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