Blackening appearing in the arctube of my 70W green thallium lamp
[img]https://i.postimg.cc/hPP6VwC0/IMG-8300.jpg[/img]
This blackening appearing 5 days only after the first use. Even after the first use, there was blackening at the ends.
What is this???

Blackening appearing in the arctube of my 70W green thallium lamp


This blackening appearing 5 days only after the first use. Even after the first use, there was blackening at the ends.
What is this???

20250816_235032_1.jpg 20260121_20574428029.jpg 15th_May_2017.JPG Screenshot_20200409-134903.jpg Screenshot_20200816-110603.jpg
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AngryHorse   [18 May, 2024 at 09:01 PM]
Never owned any coloured halides?, maybe it just something these do?
dor123   [19 May, 2024 at 07:55 AM]
I didn't seen this phenomenon in any other colour MH lamp. In my former Venture MH-DE 70W/UVS/GDX lamp, there were slightly end blackening and huge amount of thallium that looked black, both when hot and cold.
Also: That whole blackening afterglowing when turning off the lamp, as if it was the liquid thallium itself.

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