I have been having some interesting issues with my BAH CHEs. I initially bought a 250W and a 150W bulb. I was very satisfied with the amount of heat they gave off. But confused on how they seemed to always come loose in their fixtures, but really didn't think it was anything. Slowly over the span of 8 months on both bulbs the ceramic part came loose from the metal socket end and eventually the bulb fell free. My bulbs were never moved and other than the occassional, gentle retightening I had to do. They weren't dropped or anything. I removed both bulbs from their sockets and discovered something interesting. The silverish metal ends of both bulbs had "mushroomed". I contacted BAH who supplied me with a replacement 250W at a discount, I opted not to replace the 150W since I was able to get it somewhat functional and didn't see needing it for much longer anyway.
During the interm I used an older ZooMed CHE bulb in the fixture that the 250W BAH was in, and it's still there (and in use). When I recieved the replacement I put it into an identical fixture.
Today I noticed the replacement bulb had become loosened in the socket and when I bumped the cage it make sparking noises. Alarmed, I immediately unplugged the fixture, allowed the bulb to cool an examined it. It had also mushroomed at the end as did the first.
Out of curiousity I checked the ZooMed bulb, who had been in the socket of the 1st BAH for about 2 weeks LONGER than this new replacement has been in it's own. It still looks as good as it did when I bought the thing... in 1999!
I have limited knowledge of electricity and the like. My boyfriend is a mechanic and has suggested their might be a problem with the material BAH is using for the ends of their bulbs.
These changes in the bulbs scream to be that these are a definate safety issue!
MY question is has anyone else noted any of these changes in their BAH CHE bulbs? Do you have any insite on this matter?
I have contacted BAH for their take on it and am awaiting reply. Since they didn't seem to worried when I contacted them about the problems with the first two, I doubt I'll get much with this one either.
below are photos of the bulbs....
First two ...2857 & 2858 are the old bulb
3rd ...2859 is the replacement
4th ...2861 is the ZooMed bulb for comparison
During the interm I used an older ZooMed CHE bulb in the fixture that the 250W BAH was in, and it's still there (and in use). When I recieved the replacement I put it into an identical fixture.
Today I noticed the replacement bulb had become loosened in the socket and when I bumped the cage it make sparking noises. Alarmed, I immediately unplugged the fixture, allowed the bulb to cool an examined it. It had also mushroomed at the end as did the first.
Out of curiousity I checked the ZooMed bulb, who had been in the socket of the 1st BAH for about 2 weeks LONGER than this new replacement has been in it's own. It still looks as good as it did when I bought the thing... in 1999!
I have limited knowledge of electricity and the like. My boyfriend is a mechanic and has suggested their might be a problem with the material BAH is using for the ends of their bulbs.
These changes in the bulbs scream to be that these are a definate safety issue!
MY question is has anyone else noted any of these changes in their BAH CHE bulbs? Do you have any insite on this matter?
I have contacted BAH for their take on it and am awaiting reply. Since they didn't seem to worried when I contacted them about the problems with the first two, I doubt I'll get much with this one either.
below are photos of the bulbs....
First two ...2857 & 2858 are the old bulb
3rd ...2859 is the replacement
4th ...2861 is the ZooMed bulb for comparison
I know there isnt anything I trust completely. I check temps as often as possible in any given day. 
That is two new units quit working within 2 weeks of being installed!! This time it was an Exo Terra 250 watt. Time to switch to something else! I have plastic vision cages on the way, thinking of using a heat tape or something any suggestions? Beating my head against the wall might help right now! 
). Thanks for the help!!