florescent

Hi i have this light that came with the lid of the tank. It has a bluish hue and is a t8 15 watt florescent light. I wanted to know if it was enough . Im also using seachem flourish fert and some co2 optimate from tetra

I have a 120 gallon and will be starting my fishless cycle very soon. It's 72 inches across and I need some lights. I could get 3x 24inch lights, or 2x 36inch lights. I'm wondering if I should go LED or just stick to good old Florescent. I might have a few plants, but the plant needs will be...