I'm sure I could answer this question with some research but I don't have a lot of time to make my decision with this lamp and I also appreciate first hand knowledge on these topics whenever possible so thank you all for your replies. I have a 250W HPS ballast (formerly an actual street lamp) and plan to assemble a roughly 7' x 5'5" grow space for personal growing, only a handful of plants at a time.... My question is whether this 250W is enough for my grow project? I can trade this up for a 400w HPS but it will be a little trouble... is that trouble worth it? I have researched enough to know I'll likely have 2 chambers, one for the veg and one for flowering.... any and all suggestions and comments related to the lighting as well as any other suggestions are welcome and appreciated.... Thanks and keep on tokin strong