Final thread, promise. Any changes I need to make before I buy?

Hey two quick and ugly paint drawings, one with 4 COBs and one with 5 COBS. I also think, that a good pentagon frame, distributes the light more effectively.
Just my two cents.
Regards
 

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Maito Gai said:
Hey two quick and ugly paint drawings, one with 4 COBs and one with 5 COBS. I also think, that a good pentagon frame, distributes the light more effectively.
Just my two cents.
Regards
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Hey thanks for that. Where did you get the cob light spread etc? Just estimates? and I'm going with 4. It's more than plenty for my needs ^^
 
Yeah just fictitious, but I think you get the idea.
@61.2%
(5) CXB3590 3500K CD 36V @ 1.05A (35.5W ea)
(1) HLG-185H-C1050
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61,2% efficiency at full throttle and you still could dimm them...
 
Maito Gai said:
Yeah just fictitious, but I think you get the idea.

61,2% efficiency at full throttle and you still could dimm them...
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But you could do the same with 6.. or 7 cobs right? I'm just poor, so.. I think 4 will be more than plenty for my 2x2 space. :/
 
I don't understand why you feel the need for more than (2) CXB3590's in this application................especially if you say you're on a budget............
 
HandyGringo said:
But you could do the same with 6.. or 7 cobs right? I'm just poor, so.. I think 4 will be more than plenty for my 2x2 space. :/
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4 is perfect for a 2x2. They will be a foot or more above the plants so using a pentagon adds no value at all, it just forces you to put the cobs closer to the walls. 1 cob six inches from each wall corner creates perfect spacing.
 

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Evil-Mobo said:
I don't understand why you feel the need for more than (2) CXB3590's in this application................especially if you say you're on a budget............
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Well, I'm on a budget, but I'm not going to be investing in a sub par solution, when the ideal solution would be 4 cobs.. ^^ Like if the upgrade from 2 cobs, to 4 cobs, is a 40% increase yield wise, and the increase from 4 to 5 is a 5% increase, it's not worth it in my book. If that makes sense.


Danielson999 said:
4 is perfect for a 2x2. They will be a foot or more above the plants so using a pentagon adds no value at all, it just forces you to put the cobs closer to the walls. 1 cob six inches from each wall corner creates perfect spacing.
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Exactly the spacing I was thinking about. 16 inches long and 16 inches wide + shape. That leaves roughly 6 inches on each side to the walls ^^
 
Evil-Mobo if he only would run two COBs, he should go with Vero's, they are more efficient at higher wattage. The spread wouldn't be that perfect.
HandyGringo 5 x cxb3590 fits perfectly to the hlg185.
 
Maito Gai said:
Evil-Mobo if he only would run two COBs, he should go with Vero's, they are more efficient at higher wattage. The spread wouldn't be that perfect.
HandyGringo 5 x cxb3590 fits perfectly to the hlg185.
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And 4 cxb3590 fit perfectly on an hlg120 which saves a bit more money and gives about 38watts sq/ft.
 
If you run them dimmed at 700mA you get 64% efficiency and during flowering you can raise to 1050.
But yeah 4 cree's will also handle it.
 
Maito Gai said:
Evil-Mobo if he only would run two COBs, he should go with Vero's, they are more efficient at higher wattage. The spread wouldn't be that perfect.
HandyGringo 5 x cxb3590 fits perfectly to the hlg185.
Click to expand...

To me there's no sense in forking out the cash for top bin 3590's to run so many soft in a given area. There are other COB's that would accomplish the same for less $$, so when someone is talking budget going overkill on 3590's is not what comes to mind lol..........
 
HandyGringo said:
Well, I'm on a budget, but I'm not going to be investing in a sub par solution, when the ideal solution would be 4 cobs.. ^^ Like if the upgrade from 2 cobs, to 4 cobs, is a 40% increase yield wise, and the increase from 4 to 5 is a 5% increase, it's not worth it in my book. If that makes sense.




Exactly the spacing I was thinking about. 16 inches long and 16 inches wide + shape. That leaves roughly 6 inches on each side to the walls ^^
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Good luck on your build sir
 
Evil-Mobo said:
To me there's no sense in forking out the cash for top bin 3590's to run so many soft in a given area. There are other COB's that would accomplish the same for less $$, so when someone is talking budget going overkill on 3590's is not what comes to mind lol..........
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I plan on running them harder on flowering though. That's not what you mean though, is it? Like what cobs would you be using instead? ^^

Evil-Mobo said:
Good luck on your build sir
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Cheers!
 
Maito Gai said:
If you run them dimmed at 700mA you get 64% efficiency and during flowering you can raise to 1050.
But yeah 4 cree's will also handle it.
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Do you think the 5th cob will make big difference? And the 185H 1050mA will be fine for both 5 cobs and 4 right?

Oh wait, no probably not for 5.. So, which one for 5?
 
HandyGringo said:
I plan on running them harder on flowering though. That's not what you mean though, is it? Like what cobs would you be using instead? ^^



Cheers!
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I am feeling more ill than usual and not in the mood for an argument, and I can easily see this going down that route but whatever. Different strokes for different folks. When someone can show me with results how much of a difference a % in efficiency that's within any margin of error makes such a huge difference in a grow then I'm all ears.

I have (4) 3590's lighting the fuck up out of a 3X3 and it's more than enough light. You want to put the same in a 2x2............you say you're on a budget......etc.....etc........ Remember, there's more than one way to skin a cat, and at some point you have to stop arguing about efficiency and buy some shit and grow a plant right.......

Buying 3590's to push them soft seems pointless to me. Buy 3070's for that or look to Citizen. But to call a 2 COB 3590 light sub par solution is actually hilarious. We have a board sponsor who sells the crap out of 2 COB light setups and they're meant exactly for the space you speak of:

https://northerngrowlights.com/collections/all/products/photon-180cd-led-grow-light-1

And there are various grow journals on here by folks using that light with the different brand COB's too. His Vero light at $299 is a steal right now, I do not think you could build it with the same components for the price he's selling it for.

I would look to get 2 COB's, Either 3590's or Vero 29's your choice and run them 80 watts plus a piece if it was me. You could get away with two pin heat sinks one driver two cob's the optics of your choice and a dimming knob and call it a day. If you went Cree I'd say 3500K on the COB's and 4000K on the Vero's. Why clutter up such a small space with extra gear that doesn't need to be in there to make it work.

Just my opinion anyways. We are all entitled to ours right :bigjoint:
Cheers
 
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