T5 Light Life


New member
I have T5 lighting with a Ice Cap ballast. They are 39W lights 34" bulbs and I have three of them. Lately the lights have not been lasting more than one to two months at most. I have two CPU computer fans in the hood. The first set of lights when tank started lasted about a year. Any idea of why the lights are having a very short life.

Michigan Mike

Freedom costs a buckofive
What bulbs are you using? What changed? VHO bulbs are much better @ being overdriven than T5.
Its fairly known that overdriving T5 bulbs shortens the usable life of bulbs.


Raise The Reef!
More than likely, not enough cooling. Ice cap ballasts are terrible on T5s. I'd sell the ballast and get a couple spec T5 ballasts and a fourth bulb.