When I came home from work last night my new Marineland Canister Filter had lost its prime and wasn't working. I pushed the self prime button numerous times but it would not prime. Then mysteriously out of the blue a couple of hours later after I had given up as mysteriously as it lost its prime it reprimed with me doing nothing. It makes me nervous that this filter could lose its prime. I'm leaving in a couple of weeks for a vacation and if it were to lose its prime while I was gone and nobody was there to reprime it I may come back to a tank of dead fish. Does anyone know what would cause this filter to lose its prime and why when I attempted to reprime it nothing would happen? I had only had it hooked up for two days after this happened. Thanks