On my tank I use daytime heat lights and nighttime heat lights. Obviously the daytime ones I only use during the day, and I keep the nighttime ones all all the time. The problem with that is that the night bulbs never last more than a month and a half. I've had the same daylight bulb since september, but I've gone through 3 nighttime bulbs now. Which bulbs have you had the best luck with? It's just frustrating to buy a new bulb about every 6 week, sometimes every 4 weeks. Thanks! 
-Kristen

