Grow Room Lights
- Thread starter KB578
- Start date
smoketoker90
Member
Hi. You should use daylight/cool-white bulbs for vegging. The ideal colour temperature for veg is 2700K.
You have about 2x4 feet of room to grow, so 8 square feet. You should have at least 3000 lumens per square foot of growth, that means you need about 24000 lumens.
27watt CFLs give out about 1850 lumens, 42watt CFLs give out about 2700 lumens and 65watt CFLs give out about 4200 lumens. Just make sure whatever you use adds up to about 24000.
You can find some good information about CFLs here.
You have about 2x4 feet of room to grow, so 8 square feet. You should have at least 3000 lumens per square foot of growth, that means you need about 24000 lumens.
27watt CFLs give out about 1850 lumens, 42watt CFLs give out about 2700 lumens and 65watt CFLs give out about 4200 lumens. Just make sure whatever you use adds up to about 24000.
You can find some good information about CFLs here.
trichomedome
Active Member
KB578 You should try having a look at this before you spend any money ! good luck tcd
http://www.uk420.com/boards/index.php?showtopic=236629&st=0
http://www.uk420.com/boards/index.php?showtopic=236629&st=0
TechnoMage
Well-Known Member
The name of the bulbs mean nothing, what you're looking for is the Kelvin rating. For vegging you DO NOT want to use just a 2700K bulb. 2700K-3000K is the red end of the spectrum and is primarily used for flowering. 6500K is the blue end of the spectrum and is primarily used for vegging.
For mothers and when I'm starting clones, I use 2x14w T5 bulbs, one 3000K and one 6500K. Each bulb puts out 1,350 lumens for 2,700 lumens total.
For vegging I use 3x54w compact T5s, one 3000K and two 6500K. These bad boys put out 4,800 lumens each for a total of 14,400 lumens.
Don't get me wrong, I love using florescent for starting clones, keeping mothers and vegging. I tried flowering with florescent 3 times before I gave it up. I was up to over 400w of florescent using a mix of T5s and T8s and heat was getting out of control. Then I switched to a 250w HPS in an air cooled hood. Temps dropped and my yield went up. This grow (see sig) I've bumped up to a 400w HPS and have still kept my temps under 80 degrees. The cab runs about 5 degrees warmer than the room.
For mothers and when I'm starting clones, I use 2x14w T5 bulbs, one 3000K and one 6500K. Each bulb puts out 1,350 lumens for 2,700 lumens total.
For vegging I use 3x54w compact T5s, one 3000K and two 6500K. These bad boys put out 4,800 lumens each for a total of 14,400 lumens.
Don't get me wrong, I love using florescent for starting clones, keeping mothers and vegging. I tried flowering with florescent 3 times before I gave it up. I was up to over 400w of florescent using a mix of T5s and T8s and heat was getting out of control. Then I switched to a 250w HPS in an air cooled hood. Temps dropped and my yield went up. This grow (see sig) I've bumped up to a 400w HPS and have still kept my temps under 80 degrees. The cab runs about 5 degrees warmer than the room.