take a look around here~many build their own, what i can say is that 300w of 1w LED's will not get the same results as 300w of 3w LED's so be careful with just looking at your wattage. you need to make sure the light also has 660nm deep red to get your desired flower results...i like the performance of my lights WEX-C150 w/3w LED's w/5 bands of spectrum. :thumbsup: