HELP! first time flowering

i have a hydro set up with a 300 watt LED and some other hanging florescents. They are lemon skunk and in there 2nd week of flower. They are getting the Lucas Formula for nutrients and are maintaining a ph of about 5.5 . the temp is between 75 and 80 humidity is between 45-50%. Not sure if the look right. They are getting much taller and bushy but no real signs of flowers. They were on 12/12 for the first week and are gradually going to a 14/10.View attachment 458537

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those plants are just starting to flower, switching to 12/12 doesn't mean you are flowering. flowering is the first sign of bud sites (pistils).