Zilla Incandescent Bulb, Night Red Heat, 150 Watt (3 Pack) Pack of Three Zilla Incandescent Bulbs, Night Red Heat, 150 Watt Provides consistent ambient heat that warms the habitat Visible red glow does not disrupt creature's nocturnal habits or sleep patterns Allows for viewing nocturnal habits and shy species activites Heavy-duty filaments yield hours of performance