Mars Hydro
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You will need around 35~50w/sft for led growing, if you want great result, better get above 40s/ft. So raughly around 360~450w from the wall for your led grow light in 3x3 area. 
Hope this is helpful. Mars II 900 and Mars Reflector 192 can be a great choice.
Hope this is helpful. Mars II 900 and Mars Reflector 192 can be a great choice. 
