New Here Need Some Advice From You L.e.d. Vets Before I Order

[hempygorilla]

4-cxb3590 36v and 1-HLG-185H-C1400B driver with 2-5.66"18" heatsinks active cooling with fans will give you 200w for each tent. Dim them to 50% during veg and 100% during bloom. Will work great and you will be most happy.

Nice I shall try this route now anyway we can do maybe 300 flower and 100 veg or best to leave at 200 each

 

[hempygorilla]

But def watch the growmau5 videos titled diy leds part 1 thru 7.peace

Yeah I was checking that out that guy is led guru lol.
So I was able to get this driver from a flea market cheap like 40$ MeanWell HLG-120H-C1050B.

So for my 2x2 setup I can run 4 1212s citi at 36v x 1.05 = 37.8 watts to each cob x 4 cobs = 151.2 watts so would this be efficient and good for me in my 2x2 do I have anything to fill or can it run fine idk

I have 10 citis 1212s So what other driver should I look for to power the rest for flower efficiently.

 

[sixstring]

Please refresh me on how many tents and what sizes they are.and are they all for flower or is 1 for veg?
I will look at the stats on that driver when i get home,but a new mw hlg-120-1050 is only 40 bucks maybe 45.00.

 

[sixstring]

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Yeah I was checking that out that guy is led guru lol.
So I was able to get this driver from a flea market cheap like 40$ MeanWell HLG-120H-C1050B.

So for my 2x2 setup I can run 4 1212s citi at 36v x 1.05 = 37.8 watts to each cob x 4 cobs = 151.2 watts so would this be efficient and good for me in my 2x2 do I have anything to fill or can it run fine idk

I have 10 citis 1212s So what other driver should I look for to power the rest for flower efficiently.

ok that drive has 148v availible so should work with 4 x 36v cobs.i know for fact it will run 4 x cree and citi should be fine as well.so yeah about 150w from those 4 cobs and that driver so 37.75w per sq foot should be nice in a 2 x 2

 

[sixstring]

leaves you with 6 more cobs,i would use all 6 in a 3 x 3 tent with this driver in series wiring. http://www.rapidled.com/mean-well-hlg-320h-c1400b/ use coupon code growmau5 for 5% off
this would be about 50w per cob for 300w and dimable with a 100k potentiometer added to the dim leads. so you could dial it down to around 150w for veg and crank it up for flower.

 

[hempygorilla]

leaves you with 6 more cobs,i would use all 6 in a 3 x 3 tent with this driver in series wiring. http://www.rapidled.com/mean-well-hlg-320h-c1400b/ use coupon code growmau5 for 5% off
this would be about 50w per cob for 300w and dimable with a 100k potentiometer added to the dim leads. so you could dial it down to around 150w for veg and crank it up for flower.

Well I won't be using my 3x3 at all cause I am gonna use both my 2x2 due to space I can get one of these HLG-240H-C1050B for 62.00 flat.

It would run my 6 cobs at 1.05 x 36 x 6 =226.8 watts would that work good for the other 2x2 tent.
So I can run a veg tent and a flower tent doing it that way should i go deep 3000k for the flower room and add uv
and do 4000k in the veg one what do you think.

 

[sixstring]

Yes.but 226w of cobs in a 2 x 2 is alot of light so be prepared to dim or be on your A game.i would equate it to 60 to 70w per sq ft if you were using hid lights. Have you ever used 70w psf of hps? I ask because its kinda overkill.

 

[hempygorilla]

Yes.but 226w of cobs in a 2 x 2 is alot of light so be prepared to dim or be on your A game.i would equate it to 60 to 70w per sq ft if you were using hid lights. Have you ever used 70w psf of hps? I ask because its kinda overkill.

Ok the HLG-240H-C1050B is dimmable so I can use that at low watts and when I move I can move it to my 3x3 and blast it : ). But for now if I wanted to do another tent 2x2 for flower what other driver should I get to power all 6 and run it low for the second tent maybe the 6 low power cooler runing cobs for flower tent maybe ?

 

[visajoe1]

Yes.but 226w of cobs in a 2 x 2 is alot of light so be prepared to dim or be on your A game.i would equate it to 60 to 70w per sq ft if you were using hid lights. Have you ever used 70w psf of hps? I ask because its kinda overkill.

I gotta say, I've never understood the 50w/sq ft rule of thumb. My reasoning, is our lights arent brighter than the sun, so how can we have overkill? I also understand there has been studies relating to growth rates and co2 levels, etc.

But, if plants grow into monsters outside with natural 400ppm co2, why cant they grow into monsters with 100w/sq ft or more? Just a wonder

 

[sixstring]

for 6 cobs thats about it unless you move down to 700ma

 

[sixstring]

I gotta say, I've never understood the 50w/sq ft rule of thumb. My reasoning, is our lights arent brighter than the sun, so how can we have overkill? I also understand there has been studies relating to growth rates and co2 levels, etc.

But, if plants grow into monsters outside with natural 400ppm co2, why cant they grow into monsters with 100w/sq ft or more? Just a wonder

well a few things,its not high noon all day outside,its only like that for a short period.if we hit the plants with 1800 to 2200 ppfd for a solid 12 hours its just too much light.look up DLI,theres actually a formula for how much light a plant recieves daily,cumulatively.imo if you have 700 to 900ppfd your doing really good in the space.

 

[visajoe1]

thanks @sixstring

I found this: DLI computed as ((60 sec/min)*(60 min/hr)*(12 hrs/day)*(PPFD))/1 million

It also mentions this, but nothing about co2: Current research indicates Cannabis grows best at PPFD = 1500 (DLI = 65) and temperature = 30 degrees C

Found it here, cool lights too! http://smartgrowtechnologies.com/quick-guide-to-the-science-of-indoor-plant-lighting-ppfd/


Cannabis 65 DLI target? Is this consistent with what you're aware of?

 

[sixstring]

yeah even 1500ppfd is too much light imo.real world testing im seeing 700 to 900 is more than enough light.this plant was in the 700 range at the tops,and prob around 400ppfd down around the center.doubling my lights would have been silly stupid and wasteful imo.

 

[hempygorilla]

yeah even 1500ppfd is too much light imo.real world testing im seeing 700 to 900 is more than enough light.this plant was in the 700 range at the tops,and prob around 400ppfd down around the center.doubling my lights would have been silly stupid and wasteful imo.
View attachment 671703

DAMMMMM !!! lol Nice ok so then shit I guess Ill just use my 4 cobs with that hlg-120-1050 In my 2x2 tent I am using 3500k atm now for my second tent which is also a 2x2 wat should I do with the last 6 cobs remember later I will be using my 3x3 so I should get something i can run in the 2x2 (2nd tent for now ) till i put on my other and then I can up the dimmer on that driver powering 6 cobs let me know gurus : )


And again pimp plants.

 

[Dunge]

Got the 5 COB lamps I purchased just days ago.

Started a grow log.
https://www.thcfarmer.com/community/threads/3-x-220-watt-5-cob-lamps-replace-3-x-400-watt-hps.87073/
Click over and join me in this investigation.

 

[dollardos]

there 50 dollars for white and 70 for bloom 19watt on both

 

[AvidLerner]

Nice info there so thats my info on 8 cobs 1 driver at 1050ma so what you think I can pull using that in a 2x2

In a 2x2 200w is best that is a ppfd of 750 to 850 the max plants can sustain. That is 50w/sf at max and 25w/sf min

 

[hempygorilla]

Ok so this is what I have now in my hands atm.
1x HLG-120H-C1050B
5x CLU048-1212C4-353H6K2 CRI 90 max 117.5W 3500k

2 Tents in my closet 2x2

I also have a smaller Rubbermaid tote as a male isolation here is pic
I have 2 clones getting started up in there.

So I have 5 more clu048 1212s comming in so what other driver should I look for now ?
I had my eye on a meanwell hlg -240h-c1750b

I really want to setup for a perpetual harvest so what other driver or drivers left to get

 

[hempygorilla]

bump

 

[hempygorilla]

Ok so I have these following items now just arrived.

5 x 3500k Citi 1212 90 cri
1 x hlg 120h c1050
1 x 180W Constant Current 700mA 129-214VDC

And need to get 5 more chips but can't decide 3500k 4000k 3000k.

Total of 10 cobs in 3 chambers

Also what heatsink profile from heatsinkUSA should I get to run these.