Hey guys I was wondering if anyone here has used Eco Complete Planted Black Aquarium Substrate, or CaribSea Midnight Black Floramax Premium Aquarium Substrate. I just have sand in there now and my plants are doing well. They have fert tabs under them now, but as the roots continue to grow through the tank I want them to have full nourishment. I also have them on a weekly liquid fert schedule as well. Any input is appreciated.