Highlights 15 Watt Incandescent Bulb - Blue by ZooMed $2.89 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity We are currently experiencing temporary outages for select pet products due to vendor shortages out of our control. We may contact you after placing your order to make substitutions or to update you on your order. We apologize for any inconvenience this may cause you. Add to cart Zoo Med's Highlights Incandescent Aquarium Bulbs are a new addition to our aquatic line of products. The bulbs are gel coated with color, rather than paint, so the color will not chip or wear off.