Changing the ballast on your 6 and 12 regular nano cube is pretty straightforward. 

• Unplug all power sources to your tan
• Remove the screws on your existing canopy.
• Unscrew ballast
• Remove 1st wire from the unit and match it up with the same on the new unit.  I like to put a little tape to make sure i do not forget what goes with what.
• Replacing the ballast on the nano cube should take no more than 5 minutes.
• Detailed instructions included