Metal Halides are too much money and use too much electricity. Why use MH's when you can successfully grow the same plant under a couple of CFL's that probably use 25 watts and emits just as much as 80 watts altogether with a successful grow? I recommend you buy some cool white CFL's for seedlings and vegging stage. Also you can buy some warm whites too just to get a mixture of the light spectrum. For flowering, if you want a reasonable yield your probably gonna have to go ahead and buy a 400-600 watt HPS though :thumbsup:.