The Active Grow T5 HO Horticultural Fixture features premium electronic ballasts, high quality aluminum reflectors and can be hung in multiple configurations to fit any growing environment. Active Grow T5 HO Horticultural Lamps feature lower power consumption, double the PPF efficiency and 100% more effective spectrums for plant growth. Comes with dual on-off switches so you can run 4 or all 8 lamps at a time. Covers a 4x4 foot area. The 120V fixture can be connected via daisy-chain for up to 3 fixtures on 120V circuits. For use in various hydroponic applications.