thanks for the info, its very good info!

I'm tossing up between 400W & 600W.. I really wanted a 600W but its more heat and a bit more electricity usage.

400W for flower = 400W x 12hours x 30 days = 144000
divide that by 1000 to get kWh = 144

144 cargable kW hours (144 x $0.13 = $18.72)

Where as using the 600W with the same formula brings a total of $28.08 per month of elec.

What do you guys use?

EDIT: I have had no prior convictions, been a good person, married and have a respectable job.. so I'm pretty sure if I got with 2-3 plants I should be ok.