Hello all. I have a 38 gallon tank with a standard 24" fixture on the top. (T8) I don't have the cash just now to upgrade my lighting, but I do have a choice of several different bulbs: a "Super Daylight" bulb, 17W 6500 Kwith a CRI of 98; a "50/50" bulb (6500K trichromatic daylight/actinic 420 phosphor) which is also 17W; and a 17W 8000K standard bulb that came with the fixture. Which of these lights would be the best for me to use to add a few low light/low maintenance plants? Also, which plants could I get and successfully grow for each type of light? I do realize that this is not going to be a good lighting system in the long run, and do plan to upgrade soon, but would like to perhaps add a few plants in the meantime if I can do so without killing them. Thanks!