Our T5 lamp sales have really shot up in the past year. We get a lot of positive feedback on them and had plenty of reorders. My favorite is our Royal Blue 460nm bulb. Great color! Also available in True Super Actinic 03 420nm Blue, Actinic-Sun and 10,000K Super Daylight White. Available in 24 Watt HO, 39 Watt HO, 54 Watt HO, 80 Watt HO.