This is a complete gripe about the bulbs. I went out and bought 6 bulbs, 3 and a half months ago throughout a months time. Almost all of them from different stores. These bulbs are garbage. For all the newbies that don't know much about reptile supplies, STAY AWAY from these bulbs. These are the crappiest bulbs I've ever gotten. I've written the company and they said they would send me replacements. It's been more than 2 months and still nothing. I've replaced them with ESU full spectrum bulbs and haven't had a problem since. Bad show Zoo Med