Diagnosing Brown Leaves on Dracaena sanderiana

Your plants may not be true Dracaena sanderiana (lucky bamboo) if they have colors beyond green or green‑white. Brown leaf sections never revert to green. Causes include over/underwatering, hard water, excess fertilizer, or low light. To help, I need details on light exposure, watering routine, fertilizer use, water source, and plant height. Photos sent to a horticultural email would allow a precise diagnosis.