I still don't use a timer on defused florescent light clone cabinet, ten days and into cups of soil, veging closet t-5 banks no timer on lights, after one week from cups to 6inch puts after second week the girls give new crop of clones which run 95 percent success. Girls then go to bloom room for two months, I keep no mothers, but can recognize my strains in the three week old girls. Bloom room 12/12 timers on each light and checked every day!
Sorry am no expert. Expert someone who wants to get your money. Just some things that have worked for me