Could both of my Icecap 250 ballasts have died at once?

[Ugla]

I just replaced the bulbs yesterday with new Radium 20k's tonight the lights are off and they have power. They worked this morning. This could be really sad.

I might be looking for a couple of electronic ballasts.

 

[Ugla]

Quite strange. Lights were off for 5 hours. I tried plugging into a different outlet, nothing.
I went to bed discouraged, my wife said the lights went out in the living room. I checked and the gfi behind the tank tripped. Reset it and now my lights work. I am happy, but bewildered.