Pendant cord management?

[Amphiprion]

I currently have a halide pendant that is cabled to the ceiling, however, the power cable throws the unit off balance, causing it to rotate. Any ideas out there that could be used to either stop this or at least lessen it in the long-term somewhat?

 

[RotaryGeek]

Run some string from the sides of the lamp to the sides of the aquarium, should stop any rotating on it.