3.3'x3.3' new COBs setup help

[randomusername420]

Hello, I'm trying to setup 1m2 or ~11 square feet tent for a small grow.

My options so far are
5x cx3590 (3500k?) with MW HLG-240h-C1400 252W (269W on growmau5 vid)

4x Bridgelux_VERO_29_Gen7_B (3000k) with HLG-320H-C1400B ~300W

4x Bridgelux_VERO_29_Gen7_C (3000k) with 2x HLG-185H-C1400B ~400W

I know the last one would be the best if you look at the watts per square foot, but would the 400W of light be too intense and burn the plants? And cause all kinds of other problems?

I feel like going softer even in bigger tent would be better...
Could I keep less plants in a tent like 2 or 3 and use the first or second setup?
I feel like using the bigger tent so things aren't stuffed and there's some space...
Or should I just get a smaller tent?

 

[canadian1969]

@CobKits

 

[CobKits]

scratch the 3590s. too expensive for what they do

vero B at 75W would prob be a bit more efficient than the Vero C at 100W - obviously the latter would be more light. the first one will be a little short on light for that space

id throw another hat in the ring:
5 vero B or luminus CXM22 on hlg320-48A = ~360W

you'll get more out of that driver than the 1400B and its the same price.

the luminus are also brighter than the veroB and about $6 or $7 cheaper per chip

 

[randomusername420]

scratch the 3590s. too expensive for what they do

vero B at 75W would prob be a bit more efficient than the Vero C at 100W - obviously the latter would be more light. the first one will be a little short on light for that space

id throw another hat in the ring:
5 vero B or luminus CXM22 on hlg320-48A = ~360W

you'll get more out of that driver than the 1400B and its the same price.

the luminus are also brighter than the veroB and about $6 or $7 cheaper per chip

Well that could be a good option too.
I checked out your website, can I use passive cooling for that 5 CXM22 setup? 133mm?
Why different stores have different passive fin style heatsink wattage ratings? Like in your shop 133mm rated up to 75W and other shop 133mm rated up to 60W

Also what color temperature should the 5x CXM22 be? 3000k 90 cri?

Should I get "LEDiL Angelina reflector for BJB Holder" or COBs are fine without reflectors?

I would place 5 COBs in an X pattern right?

 

[CobKits]

Well that could be a good option too.
I checked out your website, can I use passive cooling for that 5 CXM22 setup? 133mm?
Why different stores have different passive fin style heatsink wattage ratings? Like in your shop 133mm rated up to 75W and other shop 133mm rated up to 60W

they could prob. handle 100W if you could take an efficiency dip

Also what color temperature should the 5x CXM22 be? 3000k 90 cri?

Should I get "LEDiL Angelina reflector for BJB Holder" or COBs are fine without reflectors?

I would place 5 COBs in an X pattern right?

3000k 90 is good choice for flower

no reflectors needed in a tent

 

[randomusername420]

3000k 90 is good choice for flower

What about all 5 for both stages? 3500k ? Or it's very little difference? What do you suggest? Mixed color temp?

The specifications of hlg-320h-48A driver output are 48V , 6.7A and 320W , but the driven can do 50V+ and 7.6A? and ability to go over 320W? Like 370W?
Kinda confused about that.. How much can I adjust it??

Says it's not compatible? How does that work

 

[CobKits]

What about all 5 for both stages? 3500k ? Or it's very little difference? What do you suggest? Mixed color temp?

no reason to do that imo. the difference is subtle anyway. 3500k 80 if youre going to use it for veg and flower will kep them a little more compact

The specifications of hlg-320h-48A driver output are 48V , 6.7A and 320W , but the driven can do 50V+ and 7.6A? and ability to go over 320W? Like 370W?
Kinda confused about that.. How much can I adjust it??

it doesnt say its not compatible. it will top out at about 53.5V but thats above what you need to get your 1.5A per cob out of it. should be right in the range of 350-370W on the cob side. all you have to do is turn up voltage and current screws all the way

 

[randomusername420]

no reason to do that imo. the difference is subtle anyway. 3500k 80 if youre going to use it for veg and flower will kep them a little more compact


it doesnt say its not compatible. it will top out at about 53.5V but thats above what you need to get your 1.5A per cob out of it. should be right in the range of 350-370W on the cob side. all you have to do is turn up voltage and current screws all the way

View attachment 4020372

Alright that makes sense, but what about the drivers wattage? maximum is 320, and the whole setups wattage will surpass it by like 50W. So that could over work the driver and cause premature failure?
Or how does that work

 

[nevergoodenuf]

I am pretty sure that the HLG's are rated to run at 70*c for 100,000 hrs. So, I would say it should easily reach it's 7 year warranty, even if ran hard. With the right setup on a driver you can get much more power than rated.

 

[Seconds floor]

Thanks for that reply i have been lookingat running 6x vero29 Bs on 2x hlg 2100ma 320w and was worried about the total cob wattage at 327.6w at 100%

I am pretty sure that the HLG's are rated to run at 70*c for 100,000 hrs. So, I would say it should easily reach it's 7 year warranty, even if ran hard. With the right setup on a driver you can get much more power than rated.