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What is the source of the lithium in the Osram HQI-TS 70W/WDL Excellence dor123 0 8 Today at 05:35:38 AM
by dor123
GE BLB-EX tube - what does the EX mean? Laurens 1 74 September 02, 2026, 12:38:16 PM
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Mystery Metal Halide Challenge- Can You Crack It? Omnilight37 0 186 August 27, 2026, 11:35:31 PM
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Is it possible to run a 400W HPMV on a 400W HPS/MH ballast? SoxFtw 4 418 August 27, 2026, 05:06:39 AM
by AngryHorse
Why do some HPS bulbs warm up in different colors? Goodlighting2000 3 344 August 27, 2026, 01:58:30 AM
by Medved
Why do some HPS lights cycle differently? Goodlighting2000 1 221 August 27, 2026, 01:54:33 AM
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LED tube on a programmed start ballast Emersyn 3 328 August 25, 2026, 05:53:18 PM
by icefoglights
What happened to all the mercury vapor lamps? « 1 2 » Walter Knox 25 1877 August 25, 2026, 06:27:51 AM
by HomeBrewLamps
Is Philips making HPLN and SON H 110W Jovan 0 205 August 23, 2026, 05:49:58 PM
by Jovan
Coated HPS stillaintjeff24 3 1438 August 23, 2026, 05:17:17 PM
by Lightingeye60
New HPS arc tubes: how much black/speckling normal? Hertz2006 5 524 August 23, 2026, 08:15:13 AM
by SoxFtw
Which HPS light bulb do you like more? Coated or clear? Lightingeye60 2 406 August 21, 2026, 03:34:27 AM
by icefoglights
Which metal halide bulb do you prefer? Clear or coated? Lightingeye60 11 710 August 20, 2026, 09:51:48 AM
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Do you prefer clear or coated LED bulbs? Lightingeye60 5 474 August 20, 2026, 08:17:47 AM
by ace100w120v
2x F32T8 Rapid start fixture Emersyn 5 949 August 19, 2026, 06:06:41 AM
by Lightingeye60
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