To Upgrade Metal Halide Lamp and or Ballast:

You can upgrade to: 6500K, 10,000K or 20,000K U.S. or German lamps.

You can also upgrade your 175w Ballast to 250 or 400 Watt

TO Upgrade Lamps: Choose the lamp that is below the ballast you have or will be upgrading to. The Cost is per lamp. Put a 1, 2 or 3 in box depending on how many bulbs you have to upgrade.

TO Upgrade Ballast: Click the box next to the Ballast size you want and the number of bulbs in your system. When all done click Add To Basket.