more LUMENS per sq foot is better. watt is the rate of energy conversion. lumens is the a measure of the preceived power of light.

you want a minimum of 5,000 lumens per sq foot. the more the better!

if you already have the UFO then why not use it. it can be done. and definitely supplement with CFLs. like macro said, 6500K for veg, 2700K for flower.

you should start a grow log too!


-shake