Grow tent help

Hello everyone, I'm going to start a little grow op soon and wanted to know if a 600w hps light is enough for a 8ft by 4ft tent? Or if i should use 2 400 watts instead. Not too sure what i should do, i was also considering putting cfls with the 600w hps. Thanks.

Your going to need a little more horsepower. 2 1k are ideal but if you can afford 2 600s go for that

2/600s would be ideal for that tent. If not, just go with the two 400 u got. Can get the 600s close to plan t, not as much heat as the 1000's

2 600s or if u really want 1 600 1 400 but I'd go for 2 600 that's what I have in my 4-8

2 600s all the way!