Set up: 5 Neons, 4 Red Minors, 4 corys, 2 balas, 1 stubborn old goldfish, haha 55 gal Gravel Fluval 405 with sponges, carbon, biomax, biomax, biostars Aqueon T5 with 6500k and color max I'm looking to add 4-5 low to mid plants and have heard that carbon/mechanical media is bad for plants...