I know nothing of led lighting as far as feed same as wattage I don't think so I grow n soil my autos never have feed above 675 ppm that was pushing them with synthetic nutes I run a 1,000 watt hps. Now I plan on getting a led light for my second box in last year I've watched people grow from seed to harvest with led I'm thinking height adjustments and calmag will be my only concern led can grow anything I personally am going to use led for my new vegging box I'm thinking a 900 watt led will work fine might go 1200 watts can always add on.