Do I need to lower my lights?

I would keep light closer for flowering. But in vegging you probably want the plant to stretch out some. Overall I think you may need to be a few inches closer. But watch center of light. They all run a hot spot. I use a ppfd reader. If you have one keep it under 2000.

12-16 inches for the light height.. Try 16 first.. But it's really hard to say for me anyway without measuring.. But I run lights close like 18-20 inches for 700 watt and 24-26 for my 530. When you run your light at 16" it will dramatically increase the rate at which it grows.. So it might make your grow go bad for the worse. Growing with more light is like growing with gasoline and you got to know what your looking at. Lots of folks on here think they have "too much" light when there are other problems.. not related to the amount of light.

Some quick googling (which I should have done first) shows that 27k is a bit low. My lux meter right under the LED comes in closer to 80k (iirc). I'll plan to drop my lights, what do you guys recommend for flowering stage with autos?