quick question regarding cycles.

How many days does it take on the 12/12 cycle for the plant to realize it and begin switching its functions towards making nugggg.

2 to 3 weeks.

hi thier, towords the last 10 days of flowering is it better to less the amount of water on the?

look say a plant takes 4 weeks to vegg
and 8 weeks 12/12.
when in 12/12
feed for the first 6 weeks
then just plain water for the last 2 weeks"flush out the old nutes before harvest"
you must do this, before you dry/cure your weed, so your not smoking old nutes etc...
the growing is the easy part, its the flushing/drying/curing what is the hard part, and not smoking before its dryed and cured properly.