How do you flip fom veg to bloom?

[Ckbrew]

How do you flip from veg to bloom? Change light time from 18/6 to 12/12 on one day, over several days, after 36 hour black out, something else?

Do you taper light below 12 hours time near the end of bloom?

 

[Gingerbeard]

24/0 during veg. Flip to 12/12 and stay.

 

[Eliot Pryor]

I grow hydro, veg on 18/6 till it reaches appropriate height then change water to flower mix and change lights to 12/12.

 

[3Berries]

18/6 then 12/12 next day. I start flower nutes a week before.

 

[Farmbuck]

18/6 to 12/12 with photos. Don't care with autos.

 

[Smoklahoma]

I run 20/4 till change. First day of flip, drop 2 hours, drop an hour each day after that till 12/12.