Upgrade....cfl???

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cdtmcd

Member
ok i upgraded today and wanted to know if im good...or will i just burn my plant....one black russian strain....4(14-watt) cfl's that put out 800 lumens a piece AND 4 (23-watt) cfl's that put out 1600 lumens a piece....my square footage is 23.5inches x 18.33inches x 16.33inches (18gallon tub)...
 
CashCrops

CashCrops

Well-Known Member
I used 4 100watt 1600 lumen cfl's for my first grow and had them two to three inches away from popped seeds and never burned them. Get a thermometer and place it near the canopy of your plants, or use your hand. If your hand is ok then your plants will be ok. Make sure you don't leave large droplets of water on the leafs though, it'll act like a magnifying glass and burn a hole in your leafs.
 
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cdtmcd

Member
ok but as far as lumen output should i go up?? as you see it is 9600 total and what distance should i place between the bulbs and the plant...???
 
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cdtmcd

Member
well cash you said you started yours with cfl's never said how far you went with them or if you converted to red spectrum light, guess i should of been a lil more clearer...my plant is 2 weeks into veg and what should the lumen output be with regular daylight blue spectrum light bulbs with the already stated bulbs??
 
delvite

delvite

Well-Known Member
cdtmcd said:
well cash you said you started yours with cfl's never said how far you went with them or if you converted to red spectrum light, guess i should of been a lil more clearer...my plant is 2 weeks into veg and what should the lumen output be with regular daylight blue spectrum light bulbs with the already stated bulbs??
Click to expand...
.............................How much light is needed for growing?

 Depends on the size of plant you are trying to grow. I'll try to answer this "in general" instead of being specific to one size plant. Light seen and perceived with the human eye is measured in Lumens. There is an ideal amount of lumens for growing and a minimum amount of required lumens. The very minimum amount of light required for smaller sized plants grown is around 3000 lumens per square foot. Let me put emphasis on "minimum amount" of light. However, that's not 100% exactly accurate, since although you may have a 10,000 lumen light, the amount of light that reaches the plant varies with the distance between the light and plants, and the reflectivity of the grow area. The ideal amount is somewhere around 7000-10,000 lumens per square foot for average sized plants. As long as the plants do not show burn, as much light can be used as you want to use. (Note, the sun produces about 10,000 lumens per square foot, on a sunny mid summer day). Contracy to "talk" you CAN have too much light............................ info sourced from - http://www.marijuanatipster.com/CFL Light Tutorial - ;)
 
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