I'm starting a 10 gal tank solely for the purpose of growing plants for my larger tanks. I want to buy a lighting system that will provide from 35-60 watts. The tank is 20" long and would normally use 18" bulbs. I can't find 18" T-5's that are 6700k or anything similar that is good for freshwater plants. I'm open to any type of lights that will work. I'm hoping someone can steer me to an online seller that has something that will work.