shit u can use what every 12x 26watt cfl's 150 wat hps 250 hps 400 hps its all in how much u wanna spend how big of a space cuz if its small and u want 10 females and high yielders u have to be realistic wud ur space hold 10 big bushy ladies or wud u rather grow 20 foot tall midget ladies ranging from 7-28g's a piece and go crazy i mean its a lot of watering but less space consuming smoke a blunt and think about it