Thanks .No contest--the sun is more intense and if you have it in a good place, it is getting sun all the way around the plant. In addition, your 1000w LED is probably more like 500 actual watts, so no where near as strong as the sun. However, because the sun is so much stronger, you should acclimate your plants to the sun slowly.
2ReEyes is correct about dragging bugs into your grow space--this is a real concern.
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