There is a reason it trips. Until you are exactly sure what that reason is, you shouldn't sleep sound.
Some times it is a cruddy ballast that you want to run till it burns out any how... but some times it is salt in the plug, which can heat up and burn the plastic...where you could loose your whole house. Big SW tanks come with some danger, GFCI are one protection from some of the dangers. In short, a larger disaster might have been avoided here recently.
Of course, I am sorry for your losses and for the corals!