I have never grown plants under lights before and someone gave me some Hoya plants. Could anyone out there tell me what is the correct fluorescent bulb to use for my new Hoya plants in the house over winter. I'm so confused about "warm" and "cold" bulbs and the different color spectrums. If you grow your Hoyas under lights, could you please also tell me what your set up is and how close to the Hoyas do I put the grow lights? Thank you. Margaret