I have three citrus seedlings, the oldest is less than one week out of the seed starting mix. It started out bright green, but its two seedling leaves have unfurled yellow green. They are about 1/8" long each at this point. I have no idea what color those bitty leaves should be. Eldest seedling was also approaching 1" high and leaning strongly toward the south facing window it was in. If these babies need supplemental light, will 4 t40 flourescents hung a couple of inches above the seedlings be enough?

All suggestions gratefully accepted!