You have to use the correct COLOR spectrum for flower. That relates to your useable lumens.

You should not put plants in flower and then take them out. Instead, read about 'cloning for sex', whcih is outlined here:
http://boards.cannabis.com/grow-log/...ml#post1829439
Starting at that post, you can follow the process. Go back to see how clones were actually taken, and the mother plants were ranked.
stinkyattic Reviewed by stinkyattic on . lighting help sun blaze t5 48 i have a sun blaze t5 48 total watts is about 450 not sure on the lumens i think 45000 but my question is do i need to change my lighting to somthing else when i go to flower or is this sufic.. also is it a ok thing to send my plants into flower after 15 days of veg to find sex and then return to veg Rating: 5