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xxxhazexxx Reviewed by xxxhazexxx on . what will happen if i use a 600 watt hps bulb in a 1000 watt lamp? So i recently got a 1000 watt HPS lamp and ballast from a friend however he gave me a 600 watt HPS bulb for it what would happen if i used that anyways? i haven't tried yet because i dont wanna bust a perfectly good light bulb anyone know? thanks in advance Rating: 5