is a 150w HPS enough?

do you think it would be enough for 2 or 3 plants my area is about 3x3

2 plants max.

ive seen 4 plants but it was sog style. 2 plants is good

2-3 you are fine. though one 3m plant vs three .2m plant makes a diff. I've done 2 plants (.2m finished size) and gotten 30g from each on average.

ive got a 150hps goin in a 1.5ft x 1.5 ft. it's very bright. I'd guess it would probably do just fine in a 3x3 as well.

yea it said on a light website that 3x3 is the max space for a 150