Hello THC,
I have not gotten any reply from Dr Evil yet. I m asking becos I have some very bad experience w MH tubes made in China.
To share the experience, I have bot 2 pcs of 150W dual end MH tubes during the last Aquarama from a China vendor/exhibitor. Think the brand is TF or something like that. They claim the arc was made by Venture and spectrum + intensity can hold for a year at least, unlike some other China brands in the market, which is manufacture domestically, sepctrum will run, intensity will drop after few months usage.
After running the tubes for 2 months, cyno and wat ever aglae start to boom like no body biz, which indicate spectrum has indeed shifted. During the 3rd month, both bulb burn one month after another. This has shattered my confidence on China made MH bulbs. Therefore nowadays I prefer to pay a bit more for germans MH tubes and achieved the desired results. So far the german MH tubes have not given me any problem at all.