OK I know a few of you follow this thread so I'd like some advice. I need to light a 120w x 60d x 150h space for growing. What are my inexpensive options? Mars, Viparspectra, any others? What would I need in terms of wattage / lumens / whatever? I can't go down the cob route for this space, funds prohibit. And my five existing cobs are all in use. Recommendations if you please, I suppose max budget is £150 but I'd rather spend less as I also have to consider getting a new camera (and I have to buy the tent and somewhere to put it).