The MegaChrome Crystal bulb is quickly becoming the most popular and successful bulb for metal halide fixtures. Balancing on super bright white light and providing a deep blue coloration that helps the corals fluoresce, giving your corals the best look they can. With a full spectrum, the Crystal bulb is optically white while having a majority of its spectrum in the blue and violet range.
- 250w SE M80 (mogul)
- 400w SE M80 (mogul)
Many public aquariums and research institutes rely on Giesemann lamps for their color stability, balance, and long lifespan. Being made in Germany gives Giesemann the most control over how their bulbs are produced guaranteeing the best quality bulb you can find for your saltwater aquarium.
Available MegaChrome Lamps:
Marine - 12500K - Emulates shallow reef lighting for great growth of coral
Coral - 14500K - Great white coloration focusing on a subtle mix of blue while still providing good growth and fluorescent coloration
Crystal - 17500K - Optically white but gives off peaks of blue and violet to help give the best coloration and growth
Blue - 21000K - Emulates deeper waters with a deep blue spectrum and very little red and yellow light produced
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The Giesemann 17.5K looks like a great bulb based on the customer reviews. But the issue about the proper ballast has me concerned. I use a Lumatek adjust-a-watt ballast with settings for 250/250QHI/400/400HQI. Will this ballast run this bulb properly or will it be "yellow tinged" as some people have observed?
With a Lumatek you will not experience the yellowing of the bulb. We have found these work great with lumatek and Luxcore ballasts. Feel free to let us know if you have any further questions!