Hello, I have a 3x3 tent and 400w HID. I want to downsize to a 2x2 tent with a mars 2 400w. I purchased a 24" x 24" x 48" tent. I'm concerned that I won't have enough height to keep this light from burning my plants. My goal is to just grow 1 plant at a time. Either an auto or a well trained photo. Is 48 inches of clearance going to be sufficient? I'd feel better with 60 inches I think. Figure the grown plant takes 30 inches of height. Please give me your thoughts.