SpectraluxSpectralux T5 54 Watt HO Lamp 4 ft Blue 6500K (25/Cs)

These T5 vho (very high output) lamps are a Brand new technology. T5 Ho (high output) lamps have an initial rating of 5,000 lumens. The vho lamps are 7,200 lumens. They have to be paired with a vho fixtures.