I have tried just about every lighting company's bulbs. My last (2) were Zoo Med 100w & 150w.
150w lasted @ 6 weeks
So, I cut back to 100w, bought for $20.74 on November 01, 2023.
Box states "last up to 2,000 hours"
My lighting is set for 12 hours per day.
Therefore, 2000 divided by 12 =...