The famous Korallen-Zucht Fiji Purple bulb is well known for its ability to give your corals an extra eye-popping color. Pinkish-Purple light to the human eye, this low band spectrum bulb (under 400nm) will naturally intensify colors in coral pimentation after 2-4 weeks of exposure. Perfect supplementation bulb to Coral Light I, Coral Light II, and KZ Super Blue bulbs. Long lasting bulbs with high quality German Engineering.