this will be my last post reviewing this led as i have taken most of the plants under this light and have put them into flower to start I have been growing this magnificent plant for forty four years I've seen alot of changes in grow techniques and strains over this time I paid fifteen dollars for my first ounce in 1964 I have been an indoor gardener for ten years always looking to improve my growing technique with and eye for energy savings and room temperature I have tried two other leds in the past a procyn 100 and a kesil 350 Both in my opinion were a dismal failure I was skeptical about this light but decided to take the risk It is by far the best of the three For the first three weeks or so of growth it was as good as any light i've used including metal halide or fluorescent t5 As the plants grew larger i feel the footprint could have been larger I also found the lower growth telling me the penetration to be lacking Maybe a second light and spreading the plants more would have made a large difference I added my original T5 for the last two weeks in vegetation to give them a boost as i felt they were not growing as they should I will continue to use the lamp but will also boost my ladies with the T5 when they reach eighteen inches to two feet. This is a well made unit and is great for the small grower with space and heat limitations i have been as honest as i can be and hope this will be helpful to anyone spending the time to read this post i will answer any inquiry b