Quote:
Originally Posted by BongJuice
CFL's are awesome to use from seedling all the way into the first couple of weeks of budding.
I prefer to use T5's.
They don't use as much electricity and their brighter.
Once you get into full fledged flowering, you'll need something that put's out a bit more juice and spectrum to produce nice sized buds.
At least a 400 watt HPS with a decent bulb does the job.
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I just bought a T5 and in doing some research beforehand I found the following table.
Goto bullet #13 in the following link.
http://www.specialty-lights.com/plant-grow-faq3.html
In terms of Lumens/Watt here it is from "best" to "worst"
T5 HO Fluor: 93
Metal Halide: 80
T8: 63
T12: 55