To flower inside you will need 2700k color temp cfl bulbs.

just figure optimum lumens from cfl is 5k per sq ft. 3k is acceptable. CFL must be kept from 1" to 12" away from the plant, any farther than 12" and consider 0 lumens reaching your plant from that light.

I just threw out that number because i don't know the width etc of your plants and they will at least triple in size by the end of harvest when switched to 12/12.

Also CFL does not penetrate leaf canopy worth crap so if you want lower growth mid/center/side lighting will be needed.

Unless you have to I personally would not go with CFL unless you have done it before or are trying to micro grow. Small HID HPS ballast's & bulbs can be boughten fairly cheap from most hardware stores. (75w, 150w etc). (There security lights or driveway lights etc. do not buy mercury vapor. get High pressure sodium *HPS*which is best for flowering.)

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Dial into your plant's needs. Don't work to keep your plant alive, make it work to stay alive.