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Man maybe you should read over that forum not just that one post.
Watt per watt no flouro compares to LED.
Hell when they compare LEDs to HID they do so by running say a 1000 watt HPS against a 250-300 watt LED and the turnouts are close, I still want to see a watt per watt comparison LED vs. HID.
And most of us know it takes twice the watt flouro to even begin to compare to HID.