It can be a balancing act, using artificial light as the sole or major source of light when growing plants. If money were no object or the price obtained selling said plants was huge (think marijuana), a huge greenhouse lighted with powerful, high wattage LED would perhaps be the way to go. For me at least, growing mostly orchids in my greenhouse, T5HO gives me the most bang for the buck. But I only use those lights to supplement winter-light. I still have natural light in both greenhouses. I probably am not your typical grower.
