Fanleaf's Huge 42 COB Array Build Plus Other Builds

Yes. Viparspectra also claims it outperforms a 300 HPS. I'm dubious to this claim as my friend bought 2 for $80 each on amazon and he can't seem to get his plants any taller than a foot. 2 months into veg and they are growing very slowly.
 
Buckshot317 said:
Instead of using switch to flip between veg and flower might be simpler to put your 5000k on separate drivers from the 3000k. That way just unplug during veg. Hey jimmy I had to hook up switch at work almost identical to your veg switch, I used it for a jog and run for a small motor
Click to expand...

Works great as a 2 step.
 
Buckshot317 said:
Instead of using switch to flip between veg and flower might be simpler to put your 5000k on separate drivers from the 3000k. That way just unplug during veg. Hey jimmy I had to hook up switch at work almost identical to your veg switch, I used it for a jog and run for a small motor
Click to expand...

Double the drivers....double the cost.
#sadrulesoflife
 
JimmyJames905 said:
Yes. Viparspectra also claims it outperforms a 300 HPS. I'm dubious to this claim as my friend bought 2 for $80 each on amazon and he can't seem to get his plants any taller than a foot. 2 months into veg and they are growing very slowly.
Click to expand...
That's my exact issue. I'm at 2 months since seed drop and that's where I'm at. I was going with a 250/400 switchable hps/mh setup. And then read about LEDs and decided to go that way. Got 2 vipraspectra 300w full spectrums and it seems they can't produce. Which brings me to you JimmyJames905. Thank you for the help and support you are giving me.
 
Buckshot317 said:
I had to back up and look, it's for a 2x4. He can probably get by with one driver, especially a hlg320. I gotta get order together for some different chips, something to play with. Got my cast off, I was lifting a VFD and felt something pop, now its swollen again. Probably Shoah when taken more time off, but in greedy lol
Click to expand...

It's out his budget. He's going with a Vero 18 setup that he can use as an expansion system. Even a flashlight tied to a parrot would give him better light than those garbage viparspectra lights. I believe they were originally designed for fish tanks.
Growing seaweed and cannabis are two entirely different things.
In time he can expand a Vero 18 system to get full canopy coverage. They're on par with the citi 1212's.
 
JimmyJames905 said:
You really only need 16 COBs max in a 4x4. You can get away with 9.
For a 16 cob array use 4 rails with 4 COBs each running at 36v @1400mA. This will give you 136000 lumens. That's a massive amount. That's 800w.
Depending on which cob supplier you pick you may want to rethink the 3000k/5000k mix. It's a good mix. But only if it's switchable. I can give you Fanleafs wiring diagram and make a video on how to make a 4 cob array switchable from 2 COBs to 4.
If you go with Cree 5000/3500 is a better v/b mix if using Vero 4000k/1750k is a great option.
Personally I would stay away from the 700ma option. You can always dim down....you can never dim up.
Driver's on board does not create a lot of heat at 1400mA. An extraction fan takes care of the heat. Average tent temp is 74F with a carbon fan running. Approx 2F above ambient. Very very cool compared to HID. Even cooler than most Mars arrays. Also 1 UV light is more than enough in a 4x4. UV is VERY energetic. Also very dangerous if not used properly. To give you an idea of the energy level....the next energy level up from UV is X Rays. That's one level up from VUV (Vacuum UV). Which can penetrate your skin and destroy/damage genetic material in your body (ie. cancer) so careful with UV, especially in the 240nm-300nm range.
15 minutes exposure to UV B will cause blistering of the skin and severe sunburn.
Click to expand...


Hey guys, sorry about the mix up this morning. I figured 24 cobs was good for a 4x8, and then started rambling about 4x4's without adjusting for the cobs. (I was considering 12 cobs in 4x4)

I was initially going for a smaller version of Fans 42 cob set up. Leaving the 3000k dimmed down during veg & vice versa during flowering. I did see the cob led you made Jimmy where you flipped the switch between veg & flower. That was pretty cool. Is that better than just dimming them down?

Does it matter where I place the 5000k? I noticed Fans setup used 30% blues and it was evenly spread out. Thats harder to do on a 4x4 or a 4x8 light setup. Any ideas how to spread them out? Im curious, will using all 3500k cobs produce a higher yield than a 3500k/5000k mix?

Thanks for wire recommendation Jclone. I'll make sure to get the right one.

Anyone use the 80 20 aluminum excursion framing for their cob build? Like growmau5 does. Is it better than using aluminum angle?

Thanks for the info on uvb & cob heat Jimmy... that was a real concern for me!! Glad to know it shouldnt be a problem.

Alright fellas gotta get back to work.
 
Fanleaf's Huge 42 Cree CXB3590 COB Array Build Plus Other Builds

jr21 said:
Hey guys, sorry about the mix up this morning. I figured 24 cobs was good for a 4x8, and then started rambling about 4x4's without adjusting for the cobs. (I was considering 12 cobs in 4x4)

I was initially going for a smaller version of Fans 42 cob set up. Leaving the 3000k dimmed down during veg & vice versa during flowering. I did see the cob led you made Jimmy where you flipped the switch between veg & flower. That was pretty cool. Is that better than just dimming them down?

Does it matter where I place the 5000k? I noticed Fans setup used 30% blues and it was evenly spread out. Thats harder to do on a 4x4 or a 4x8 light setup. Any ideas how to spread them out? Im curious, will using all 3500k cobs produce a higher yield than a 3500k/5000k mix?

Thanks for wire recommendation Jclone. I'll make sure to get the right one.

Anyone use the 80 20 aluminum excursion framing for their cob build? Like growmau5 does. Is it better than using aluminum angle?

Thanks for the info on uvb & cob heat Jimmy... that was a real concern for me!! Glad to know it shouldnt be a problem.

Alright fellas gotta get back to work.
Click to expand...

It depends on wether you use Vero or Cree. Vero leans more to the red. So 4000 k is equal to a Cree 3500k. The major difference being that Vero 4000k blues peak at 430nm at 4000 k while the 4000k Cree peaks at 450nm but it's reds are that of a 3500k. Most Vero users just go with the 4000 k as an "all purpose chip". Personally I like mixing the 4000 with the 1750 as the 1750 gives you those reds you don't get from any other chip maker. To date I haven't seen anything on the cob market that gives you reds in the 650-750nm reds. Vero consistently puts out more reds. Imho Cree is slightly more powerful while Vero is considerably cheaper (half price) if price isn't an obstacle go with the Cree.
420-magazine-mobile505085782.jpg
420-magazine-mobile258068062.jpg
 
JimmyJames905 said:
It's out his budget. He's going with a Vero 18 setup that he can use as an expansion system. Even a flashlight tied to a parrot would give him better light than those garbage viparspectra lights. I believe they were originally designed for fish tanks.
Growing seaweed and cannabis are two entirely different things.
In time he can expand a Vero 18 system to get full canopy coverage. They're on par with the citi 1212's.
Click to expand...

 
jr21 said:
Does it matter where I place the 5000k? I noticed Fans setup used 30% blues and it was evenly spread out. Thats harder to do on a 4x4 or a 4x8 light setup. Any ideas how to spread them out? Im curious, will using all 3500k cobs produce a higher yield than a 3500k/5000k mix?
Click to expand...
No,, It's easy in a 4X4 or 4X8 to keep them even. Look at my 4X4.5 room. I run 25 chips in there and the spread is great too.

jr21 said:
Im curious, will using all 3500k cobs produce a higher yield than a 3500k/5000k mix?
Click to expand...

Probably not. It's mostly about photons man. 5000k chips put out a shit ton more photons than 3500k but just don't have much red that is desired in flower hence my 3000k/5000k mix. That way the 5000k chips make up for the photon loss I have with the 3000k but the 3000k has all of the flowering reds needed.
 
Back
Top Bottom