Hps is a better bang for your buk, that cfl costs 119.99 and has 8k luminens i would recomend min 2 that would give you 16k luminens 3 would be a better choice with 24k luminens but that would cost you 360.00 not worth it check this site out www.htgsupply.com on the front page they have a 400 watt kit for 164.99 that comes with everything you need and 2 bullbs, hps for flowering, mh for veging its great deal, now compare the luminens, 2 cfls which in my opinin is the min you would need for flowering 1-2 plants is 16k the 400 watt hps has 55k with that amount of luminens you would have a yeald that the cfls would not match