bassmechanic27
Member
I just bought a 1000w hps bulb off of ebay. The brand is generic (Supergro). I hooked everything up and it isn't much brighter than the 400w hps that was currently up there. It lit the room a lot more distance wise but isn't really that much brighter. Is that normal? The 400w is 55K lumens, and this one is rated at 140K. Should it be night and day for brightness? Just curious! Thanks!