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07-08-2006, 08:24 PM #6Junior Member
Best Light for Flowering?
I got one plant under 200W CFL (6400K) and 400W MH (4000K) in my closet. I will switch to a 360W HPS to flower her. I will keep my cfl on during flowering also.
However, there are some nice 125-200W cfl bulbs that are 2700K. I can get them at my local grow shop. I love talking to them about tomatoes.
Anyways, CFL have better color rendering properties than HPS, although the color temperature is estimated at 2700K, the entire spectrum is much more efficiently distributed with a CFL than HPS. However, the lumens/Watt for HPS is more than CFL. CFL also do not have more than 1-2 FT (talking about 200W here) of good growing depth, whereas an HPS of the same wattage would give a greater grow depth. Due to the crappy color properties of HPS, people do supplement theirs with another light system. Metal Halides are slightly less efficient at distributing all colors than CFL but much better than HPS. However, due to the increase in lumen/Watt for MH bulbs, people prefer these since the higher brightness outweighs the color rendering of the light.
So in conclusion, use HPS for flowering, and if you want you can supplement with MH. flowering under HPS only gives excellent herb.Stay High, It\'s the only way to get into heaven without dying.
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