The Marine Glo linear fluorescent is primarily a saltwater bulb used to highlight colors, The T8 normal output bulb delivers a powerful actinic blue light emission, which fits all suitable standard and electronic ballasts, This fluorescent bulb is essential for all saltwater aquariums, It delivers an ideal blue light that both highlights the beautiful fluorescing colors in fish and corals while providing the critical wavelengths required by corals for strong growth, The Marine-Glo Fluorescent bulb is the ideal way to light up your aquarium, The Marine-Glo Fluorescent Aquarium Light Bulb Features and Benefits:, - T8 bulb fits standard and electric ballasts, - Ideal spectral peaks for enhancing fish color, - Service Life - 5000 hours, - Promotes marine reef life, - Standard intensity, - Visible actinic blue spectrum, - Simulates deep marine light, - Stimulates marine growth, 24"" length, 1"" diameter SKU: RCHG0485