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Old 11-06-2009, 09:10 AM
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the minimum amount of lumens per square foot is 3000 for minimum plant growth. For best plant growth you need 6000 lumens per sq ft. And keep those cfls real close. like 1-2 inches
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Old 11-06-2009, 09:12 AM
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i just through a boat load of High CFLS from the top and side.
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Old 11-06-2009, 02:53 PM
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To debunk all the misinformation in this thread:

Minimum lumens required for a cfl grow: ~3k

Generally accepted lumen output for a cfl grow: ~5k

The point where more is overkill using cfls: ~11k

These approximations are per plant or per square foot when dealing with micro grows.

Also, comparing lumen outputs from different lightsources is completely useless. Don't let anyone tell you otherwise. Especially them HPS/MH fanbois.
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Last edited by RanTyr; 11-06-2009 at 02:58 PM..
 
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