Have one to sell? Sell now 4 Pack T5 Bulb 54W Aquarium Light Bulb HO for 48" 4 ft 6500K 10000K Actinic Pink 4x 54W T5 HO Fluorescent Bulbs. This listing is for 4 bulbs. (..) Type : T5 High Output Fluorescent. Wattage: 54W Length: 45.75" (Pin to Pin) , CE Certified Available Spectrums: 6500K - Natural daylight. Great for freshwater planted setups. 10000K - Crisp white color, full spectrum daylight. Actinic 460nm - Emits blue hue. Ideal for coral photosynthesis. Freshwater Plant - Emits roseate hue. Used for planted setups and general freshwater setups to help bring out the color of fish and plants.