i gots a 400w HPS which is 50 000lm
the cfls are acctual odor ones wich all put our 1600 lumens each,

whats the loss if they all add a gram each, kick ass.

but if i get like .25 g/w extra with em thats like an oz.

is is correct to assume this^ that i will at least that much?

hope so it isn't a big area, 2ftX 4.5ft