If you have cfl's that are 3500 kelvin will they work, like two 3500k =7000k to get the 6500k you mentioned?? I have boxes of 32watt 3500k four foot flourescent bulbs, been thinking of a scrog attempt with them if I could figure a way to put like a bunch side by side . How many could you run off a single ballast. Have 4 bulb fixtures in the garage and each has one ballast. If you could how would you connect a dozen side by side without the fixture ??

thanks
bill