Honestly it was the best grown ive gotten with this light so far but still the worst 400+ watt light I've used. When compared to there SF4000, this light under performed massively every time ive used it. My yeilds with the SF4000 in a 4x4 were almost 300g higher then this light and the stacking, color and quality of the plants were also always better. If your looking at a Spider-Farmer light, look at the SF4000, otherwise I'd shop somewhere else.