If you're referring to the center bracket, you don't want to take it off. It actually does provide support when the tank is full. I would think if the lights are about 6+" you'll be fine. Geoff and myself have actually replaced this brown center bracket with clear acrylic ones we made so that more light can pass through. Check out my build thread or Geoff's website. I used 3/8" polycarbonate and I have my MH about 4-6" without any problems. It gets hot, but no problems. Let me know if you need any pics.