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Tim Fox

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So I think that's gonna be what I do. Veg with CFL cools blues, then for first 2 weeks flower change to all warm bulbs, (6 sockets ) and half power go green then rest of flower no cfls, full power GoGreen.
use the CFL's while you root clones are get a seedling up to the first couple of nodes,, then use the go green for the whole ride,, the cob lights are for the whole cycle,, veg and flower
 

PurpleBuz

Well-Known Member
So I think that's gonna be what I do. Veg with CFL cools blues, then for first 2 weeks flower change to all warm bulbs, (6 sockets ) and half power go green then rest of flower no cfls, full power GoGreen.
don't use CFLs for vegging. if your really strapped for veg then get some led floodlights. more efficient than CFLs. search on amazon for whos got a good pricing,
 

MrEus1

Active Member
[QUOI TE="PurpleBuz, post: 11985318, member: 509780"]don't use CFLs for vegging. if your really strapped for veg then get some led floodlights. more efficient than CFLs. search on amazon for whos got a good pricing,[/QUOTE]
Me, I bought 4' led tubes and put them in shop lights that I took the ballasts out of. These I use for veg. One rack with 5 shop lights, 10 tubes and one rack of 4, 8 tubes for a total of 486 watts. One could build a "cage" with these and probably take a few plants to stellar fruition. You know, surround the area. My guess is that it would do a fine job. But again, me, I'm just now getting ready to mount 4 Cree 3590's onto a 4' x 5.866" heat sink and I am excited! Time to drill and tap. First time tapping so wish me luck.
 

littlejacob

Well-Known Member
It's a 3x4 space but will be scrogged so it ought ya do nicely
Bonjour
3X4=12sq/ft...30w sq/ft mini for bloom...30×12=360W...you will need 400w for bloom and half for vegg (if you choose cxb or Vero!)
If you go diy you gonna need 700 $!
If you go commercial more...
Have a great day ★
 

BM9AGS

Well-Known Member
Bonjour
3X4=12sq/ft...30w sq/ft mini for bloom...30×12=360W...you will need 400w for bloom and half for vegg (if you choose cxb or Vero!)
If you go diy you gonna need 700 $!
If you go commercial more...
Have a great day ★
yes 30 watts is a quick measurement. But a hard ran cob vs 2 soft ran cobs makes a large difference:
Hard (~100w per cob) may be getting 115 LPW
Soft (~30w per cob) is 200LPW.
When running cobs hard you're in the 30-40% Efficiency range. Which HID is about 32%.
Hid you can spend $400 and get a good 35% efficient 315watt CMH light.
Hard ran cobs you're paying 7-900$ and only getting 200watts of light at maybe 39% efficiency.

To me it's a no brainier to either get HID over hard ran cobs or get soft ran cobs and more.

4 CXB 3590s running at 100 watts total are 20,000 lumens
2 vero 29 at 200 watts total are 23,000 lumens.
1 CMH 315 watt 33,000 lumens

Big difference in heat and electricity usage. Not to mention longevity of hard ran cob lights.

*lumens are not the main concern for plant growing but it shows scalability of effects of adding power to cobs from low power 25 watts to high 100watts.
 
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Airwalker16

Well-Known Member
[QUOI TE="PurpleBuz, post: 11985318, member: 509780"]don't use CFLs for vegging. if your really strapped for veg then get some led floodlights. more efficient than CFLs. search on amazon for whos got a good pricing,
Me, I bought 4' led tubes and put them in shop lights that I took the ballasts out of. These I use for veg. One rack with 5 shop lights, 10 tubes and one rack of 4, 8 tubes for a total of 486 watts. One could build a "cage" with these and probably take a few plants to stellar fruition. You know, surround the area. My guess is that it would do a fine job. But again, me, I'm just now getting ready to mount 4 Cree 3590's onto a 4' x 5.866" heat sink and I am excited! Time to drill and tap. First time tapping so wish me luck.[/QUOTE]
Got a pic of these?
 

Airwalker16

Well-Known Member
I honestly might just buy 2 300W UFO's and call it good. They've had proven success and they stay incredibly cool which is a must in my in my situation.
 
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