Warning RANT..!
Theres been considerable interest as to whether a grower should hang his cfl bulbs vertical or horizontal ...???
I've always been in the vertical gang, to ease heat build up of the unit quick as ...
However should you rip the bulb apart you will see a capacitor about the size of a pen lid 1/4-3/4 inch
that works like they all do, its full of oil, should it ever get too hot it will crack and leak
its its 'natural' vertical position it will over heat crack, perhaps leak..? but the bulb will die
extend your cheap ass CFL bulbs by using them horizontally , with thought to removing excess heat
quick as possible
thanks!