How much of a strech, for Grapefruit in flowering?

I am growing female seeds grapefruit, about 17 inches, How much strech should I expect during flowering? they are in week 7 of veg, They are under a 600hps and a 400hps, what kind of yield should I get with 9 plants? Thanks

X2 stretch and they will yield pretty good. With your lights you should pull about 2 ozs per plant if grown right but you never know

anyone else grow female seeds grapefruit?

Hey Steve,
I just got some grepfruit seeds and I'm looking for info too.