Hey! I have a 40 Gallon breeder than I want to turn into a planted tank. I currently have dirt + fluorite capped with black sand in the tank. Anyway a few questions: Is 120v 40w enough lighting? For medium lightning plants in combination with the dirt? Do I need to use liquid ferts if I'm already using dirt? Suggestions for plants? I also plan to stock it with shrimp, otos, and livebearers in the future. Thanks!