you dont have to start flowering just cause they wanna let them grow some more mine where 8 inches when they started to show a few days ago and now they are 10 and the pre flowers havent gotten any bigger i would just let them go till you are ready to flower i mean if you are still on 18/6 just stay there till you are ready or clone the ones that have the preflowers and get rid of the ones that dont yeah small yeild this time but next time you will have all girls and some skunk ass buds

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