Jpeff
Chameleon Enthusiast
I have a hydrofarm light meter. Most led start dropping in light out put after about 3 5 years. Depending on brand of led lights. I've tested the Josh fogs led bar and jungle dawn led bar. They put out same amount of light. Now on my fish tank. The led bulbs start dieing at 8 years. But that depends on brand of led bulbs used. I've had cheaper ones only last 3 years before dieing.