I guess its 2700k as it's a general purpose household bulb (90% certain), if you send a picture of it on then can guess a bit better. Look around the plastic base of the bulb it may say on that?

look at the picture attatched: you can work it out roughly yourself.

I have noticed The US and the UK CFL's vary in wattage usage and equivilence, eg. in the UK a 20watt (even an 18watt phillips brand) = 100watt output, for 150watt output, the bulbs are only 30watts.... strange???
theeviltrees Reviewed by theeviltrees on . First Grow, Log one Hello everyone, I have a few questions... This plant is about 2-3 1/2 weaks old now. Should it be only this big? So far Im doing the light scheduals sort of random, Atleaste till I get a timer. But Im trying to keep it at 18/6. Though I sometimes am off give or take a couple hours. Theres a little yellowing on the bottom leaf you can see in the picture, Doesn't the bottom leafs turn yellow and fall off, Is this normal. I don't have much money for a ph testing kit and all the things. Rating: 5