Yes but wat i meant by that is upgrade to 2 400 watt instead of 2 250 watt hps lights...and then id just use the 2 250 watt lights for veg with a mh conersion bulb....but yes ur above statement is correct 2 hps lights give more lumens then one 400 watt sorry for not making it clear that i meant to uprgrade to 2 400 watt lights