This light absolutely dominates a 2x4 space and my sour diesels are fat and chunky at week 7 using only 75% light output. This is a great light

The Mars SP3000 is a great light for the cost. It is said to have 300 true watts of draw power from the wall and can cover a 2x4 footprint in flower. The packaging was fairly good being nice and secure. So far I have Flowered plants under this light and have a current grow just over half way and I have been pleased with how this light has done in comparison to other lights I have used at its price point. It is an extremely bright light when set to 100% power and can be adjusted by knob to set your power needs for growing phases. The aluminum heat sink works great to reduce temperatures in the cab. It is a good choice for your 2x4 lighting needs or can be daisy chained for a larger growing environment. Initial set up was a breeze with how it came with mounting hooks and adjustable hangers.