I currently have a 4' Sativa doing a closet grow with 400w HPS. She's my only plant. Problem is she dries out FAST. I went from watering her every 4-5 days to every other day now. Room temp. is controlled, light is at a good distance, buds are budding, she is healthy! But the every other day watering has got me puzzled....does this sound right? Does she need that much water?? Any input would be helpful.