This light is as powerful as the Max Yield. The benefit of this light is that you can get much closer to your plants, up to a foot away. In fact, during flower, you want to be around a foot away from the tops of your plants. What is awesome about this bar design is that it can grow a five-foot-tall plant because it has high par at 6 feet away from the light.
Goliath V2 is fanless, and thus silent. It uses passive cooling.
This will fit perfectly in your 4x4 tent as its size just under 3.5 feet.
Perfect Sun Spectrum is the sun spectrum perfected.