Itis i use 1 900w led full spec grow light and then each side of that light i have 1 340w full spec led lights so 1 900 and 2 340w lights.there just basic afforable ones mate as this is only my second run with led.recently switched from 600hps.so went for basic ones to see what i can achive.worked out great as these lights are kicking ass for me.veg and flower growth has been awsome with all plants