Just purchased a fluval plant 3.0 48" for my 120 gallon tall discus tank. Tank dimensions are 48" L 24" W and 24" deep. Plants are swords, anubias, Val, and bacopa. No CO2. Do you think one light is enough for this deep a tank? And what would you recommend for light settings? Was leaning towards Bentley's Day sim late as I like the nature day cycle idea.