idk man. if you buy those 2/ 1000watt light, your bill is gonna be really high. 1000watt light fixture uses 1100 watts per hour

example: 6 hrs x 1100 watts / 1000 x $.04 kwh x 30 days = $7.82

18 hr x 30 days = $23 month (4 cent a month)
18 hr x 30 days = $150 month (26 cent a month)