I'm not sure whats wrong with my plant. It seems like it has an illness. Her leafs on the bottom are getting yellow with dead spots on it. I would appreciate if anybody can diagnose her so i can fix it. If anybody has had this problem, I would appreciate if you could share with me how you fixed it. She's about three weeks, pineapple chunk, growing under a 1000w HPS. She's watered every three days and every other watering i use Super Thrive nutrients.