You know its not the brightest led grow light on the market but for output for the space and the efficency are really what you want to look at i am planning to supplement 2 of these with 4 25 watt panels the angle in at the plants 4 of these and 4 of the 1200 watt version with 4 300 watt models and 8 25 watt panels is enough to effectively grow 48 to 64 small to medium cannabis or tomatoe plants whatever your fancy my plants love this cob grow light