How long

[Pimp528]

do you would you usually veg for hydro?

[Gen]

Depends, what kind of plants are you growing? Trees or midgets? Some people go by height, others go by time. What kind of lights are you using?

[friendowl]

30 days or abot 15 inches

[Herbus]

If you have clones 12 - 18" will yield you about as much as any other size. Seedlings are a whole different thing. Check back if that's what you have.

Herbus

[latewood]

you can 'veg' any where from 2 weeks-2 months...the longer you 'veg'...

the longer the plant will take to finish, and as stated above, if you want big

tree you veg 2 months...if you want nice 3-4 footer, then you if 'veg' 12"-18"

that is what you will get. You see; Your plant will grow 2-3 times it's size during bloom, maybe 4, for pure sativa's...hope this helps.lw