Japanese- engineered Phoenix HQI bulbs are specially designed to bring out the beauty of your tank and aquatic pets. Phoenix Bulbs cast a bright glow from the perfect blend of white and blue tint which instantly beautifies your tank and aids in the growth of corals. You don’t have to add actinic to your Phoenix bulbs because they can achieve almost the same effect with or without supplementation. Can operate on a HQI metal halide ballast, pulse-start ballast or electronic ballast. Aquarium lighting is not as easy as it seems. Over time, you will find out how a certain set-up or a certain bulb is not the best one for you. However, Phoenix remains the go-to brand for aquarium lighting because of its durability, versality, and beauty. It’s safe to say that you can’t go wrong with a Phoenix bulb!