The AgroLED� iSunlight� Green T5 replacement LED lamps make it possible to work and control your plants when they are in their night cycle. The 530 nm is the ideal wavelength of green. These iSunlight� T5 lamps are an intelligent LED that are specifically designed to work with your existing T5 fluorescent fixture, including the single lamp Sun Blaze� Strip Light or Strip Light Supremes. These LED T5 lamps are environmentally friendly and mercury-free. Not compatible with HF Agrobrite T5 fixture.