fallen - something you should becareful of.
putting hps bulbs at an angle is not recommended by light companies. The gas in the bulb will heat up unevenly and you can get hotspots which can lead to bulb leakage or breakage.

It is very very dangerous to put metal halide bulbs at an angle. They will burn unevenly and start to omit bad UV LIGHT which is BAD for you and your plant.

I have read this a few times and I consulted the GURU last night and SHE confirmed my suspitions. Keep a close eye on your lights..

: )

SMB