what is the size of the cab/ ventillation, etc. all of those things should be figured in when choosing a light. in my 2ftx2ftx3ft chamber i have 350watts of cfls and pull a qp at harvet. in my 2ftx4ftx6ft chamber i have a 400hps and 4 42watt cfls and can pull 13-14oz at harvest. so as i said there are alot of factors to consider when choosing a light. check out these links for great lighting at great prices
http://www.northernlightsgrowroom.co...tispectrum.htm
http://www.plantlightinghydroponics.com/