I have a 105 watt WARM 2700k self-ballasted flourescent bulb that a friend gave me. My operation is not going to be very big (3-5 plants, just enough for me and my buds). Will I be wasting my time if I don't go out and buy an HPS or MH light fixture? I figure that I don't need more than a 250 watt HPS, but they are pricey. The light that I have looks like this.
250 watt HPS is about ideal for 5 or so plants..i think you will do okay with 2 plants maybeee 3 with that fluro but it won't be a great yield.