Tardy Buddha Haze Fem?

My current grow involves six precious ladies: 2x AK47; 2x OG Kush; 1 x Northern Light x Shiva; and 1x Big Buddha Haze Feminised. All plants are looking healthy under two 150w hps plus on 125w cfl (2400k). The first five plants I mentioned are in full bloom at between five and six weeks of 12/12 cycle. The Buddha Haze however, while showing strong feminine pre-flower pistils has yet to show any real buds at day 39 of flowering. Is this normal for a Haze? I know they take their time but was wondering if the 125w cfl could have a detrimental effect given its light temp (2400k). Any feedback will be much appreciated :rastasmoke: