It also depends on which plants you want to keep. Some are very easy to grow, needing little light, where are some are very demanding. Some good beginer Plants would be...
Hi...I'll take the opposite. Some plants can exist under low light and fish poop is great fertilizer. If you want very sensitive plants, you will need excellent lighting, CO2, fertilizer, etc. Check the plant forum here for advice if you want to go that route. I have plants thriving with a single 30 watt aquaglo light in a a 46 gallon (look at my moonlight link to see the huge plant in the middle of my tank...it's live), in fact, I have to keep pruning several.Several plants that will do well under low light are java fern and anubias nana. Good luck. SH