Question about air cooled hoods and digital ballasts

Ok so im thinking of getting a 600w hps with an air cooled hood and a lightwave digital ballast...

Questions and concerns are...

1 Can i run more than one lamp off the one ballast?

2 What are the advantages of digital ballasts does anyone here use one and has anyone any experience of the lightwave one?

thanks guys.

anyone?...

one light per ballast, and the digital run cooler i think

Also digital is more energy efficient. air cooled reflectors are also a good idea to keep grow room temps down.
Good luck

Yeah its not gonna come cheap at about £200 but i figure if ur gonna something you might as well do it right....

hope my cfl grow picks up lol frustrated with the yield but gonna need to make do with it til things pick up

Actually bro they make a 600 watt system that has dual outputs..lumatek makes them