Auto question

Just wondering what lighting you guys use on your autos. Do you use HPS for the the entire grow or do you swich between MH/HPS like with regular photo-period plants. Does anyone use the dual-arc bulbs?

In would use the dual spec throughout the entire cycle . If not then I would use MH until she starts to bud then switch to hps.

i use six hundred watt hps throughout my whole grows with autos and regular photoperiod plants with no issues, they grow big and fine and nice and healthy....20 and 4 with autos, then switch to 18 and 6 late