We are using 250w 10000k HQI lamps, the fixtures are Giesemann, the lamps are by Bayerische Lampe und Vacuum. I have found these lamps are exceptional for length of life, color rendering and low spectral shift. The only drawbacks are high UV output, you get a sunburn if you work under them for many hours and breaking lamps when you try to remove them from the heavy spring loaded sockets. I am sorry no one got to you, we had several employees out yesterday taking exams. Feel free to call if you have questions or need anything. Weekdays are generally slower.
Roger