Melting DE bulb...

[Dyspnea]

For the past 6 months I've been using a Giesemann 250watt MH DE Ballast , Bulb and Pendant, (Package Deal), I've been Quite happy with the whole systems.

This morning I come downstairs to see my MH system on But the bulb not a full intensity, I thought nothing of it because it would have been around that time of powering up. I come back Later and notice its still at the same intensity. So i turn off the light and let it cool and restart the light, this time only a faint blue haze is coming from the bulb and I see a bulge in the bulb. It clearly looks like it melted.







The pendant sits about 10inches above the water with excellent air circulation, I haven't even touched the bulb since installation. althought the end broke as it wouldn't easily come out. At this point not impressed with this megachrome bulb and won't consider it again.

Has anyone seen anything like this before? Is it a commen occurance?