GrowCNanswered grow question 3 years ago Your LED's almost certainly are NOT 600 and 1600 watts. Usually those big "equivalent" numbers are marketing crap. You need to look at the actual wattage consumed by the light.
If just using your HPS I want about 40 watts per square foot. For modern, white LED's I want 35 watts per foot. So depending on the size of your grow area you can estimate how much lighting wattage you need.