i am thinking on setting up a 10 gal tank for the sole purpose of growing plants. I have seachems’ flourite black as a substrate. Do I need to use any fertilizers? This is my first attempt at a planted aquarium. I want to have a large sword plant in the center and surround it with a carpeting plant. Baby tears are a bit above my expertise. What foreground plant would you guys recommend? Also, what is your opinion of liquid co2?