I went down and turned off the light. Removed the bulb and inspected the inside of the mogul. I don't know the terms for the components of a light socket but when you look inside you have the threaded part and then you have the solid piece at the very end in the middle. That solid piece is held in place by thin sheet metal and can easily be bent. I decided to bend it out a little bit just to see if the Blue MH would strike. It did not.
I then plugged in my backup ballast, an inexpensive iPower digital ballast, and it fired right up.
Here is the summary and if anyone could offer some theories as to what is going on I would sure appreciate it.
Apollo Ballast:
Eye Hortilux Blue - Worked for 100 days or so but not now
iPower HPS - Works
iPower MH - Works
SolisTek Ballast:
Eye Hortilux Blue - Worked for 57 days but no more
iPower HPS - Works
iPower MH - Works
iPower Ballast:
Eye Hortilux Blue - Works
iPower HPS - Works
iPower MH - Works
What in the world could be causing not one, but two ballasts to be incapable of firing this Hortilux Blue MH bulb after a period of time? Clearly the bulb is fine as the iPower ballast fires it fine.