I stick to basic growing. I don't know how taking clones affects/starting time for 12/12..I assume two weeks later, than normal...(just a guess)(I don't do cloning)

I go to 12/12 when I...1. see preflowers...or ...2. 12-15 inches tall...(5 -8 nodes)...usually around 30 days.

After sex is known...I switch/transplant to 10 inch pots....or (whatever the largest size pots to be used are.)

Back on the subject of two lights for vegging?...another option might be to switch to 18/6. I know ...I'm confusing....:stoned: