Nov 05, 2019 · 420LED rating: 2/5. MARS HYDRO: “here are the answers to your questions: the coverage of this light is 3*3 ft, therefore, 1 lamp is suitable for your plant growing. perfect 250W HPS grow light replacement, ensure 40% energy saving, and fix the HPS’ heat problem properly. spectrum: 440nm, 460nm, 630nm ,660nm,730nm(IR), 2400k-3000k.
Get Price