from experience with 150's..........your gonna want more. im not trying to be a buzz kill. try and keep and even canopy using lst. and with any cfl throw them on the sides or under the canopy. if you can't step up to a bigger hps then just keep in mind that the 150 doesn't have great penetrating power. so utilize cfl's for hitting spots the 150 can't.im growing 2 plants in in a 2'6" x 2' room i have a 150 watt hps and 2 45 watt cfls i know its not the best lighting but i want to now if it at least the minimum lighting i need and the lights are about 9" from the plants.View attachment 1439052