i need to know!! ballast question

how many 150w hps bulbs can i hook up to my 150w hps ballast i dnt have the ballast yet im gettin it today jus wantin to kno if i cud hook up 2 bulbs to one ballast

1 ballast = one bulb. Sorry!

thats sux ok appreciate it

https://www.rollitup.org/indoor-growing/240481-bored-electrician-answer-your-questions.html this guy knows his shit check it it is no joke bro dangerous .