I need help! Came home from work today and the plant had grown a lot less than usual and was looking really sad and droopy. Checked the pH and it was 6.4, lowered it to 5.9 and checked on it 2 hours later and she still hasnt perked up. Theres also some discoloring on the bottom leaves, kinda of like a tan spotty look on the edges. I just moved the light up about 8 inches so its about 2 feet away now. Anybody know what I'm doing wrong?? 

