The wrong lighting can interfere with the growth and well-being of your plants. If you already live in a hot place, like Miami, then the lights your using might be giving off too much heat. Excess heat is a major concern when growing plants and the wrong lighting can greatly contribute to the deterioration of your flowers. Switching to LED or fluorescent grow lights are the best alternative. To learn other tips on how to keep your garden cool visit: http://blog.1000bulbs.com/how-to-cool-down-your-grow-room/