Review on Bulbrite 15T10C 15W Incandescent Tubular Bulb by Bob Roberts

I bought this lamp on March 6, 2015 to use it 10 hours a day in my aquarium. That's about 300 hours per month, 900 of them in the last three months. But the lightbulb just died yesterday. The box says 2500 hours of average use, whatever that means. 900-1000 hours is the average lifespan of this lamp. Misleading, to say the least.