Catalina 24 Watt 50/50 10K White, 03/Blue 420Nm Actinic Power Compact Aquarium Light High intensity full spectrum light for living reef Dual bulb has 10k white on one side - 420nm 03/blue on the other Ideal for African Cichilids and Discus 10 inches long - 4 straight pins Bright 10k Day light combined with 420nm actinic is very good for saltwater tanks also