Simulated sunlight for terrariums. Optimal ratio of UVA, UVB, light, and heat radiation. Simulates natural sunlight. Helps prevent metabolic bone diseases. Supports natural metabolic processes. Contains UVA rays that stimulate activity, appetite, and reproductive behavior. The REPTI PLANET Solar UVA UVB bulb provides an optimal balance of ultraviolet light (UVA and UVB radiation), visible light, and infrared light (heat) in a single bulb. It is a full-spectrum bulb that promotes physiological processes such as activity, food intake, and reproduction. By producing vitamin D3, it optimizes calcium absorption and ensures the proper development and growth of terrarium animals.