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![]() Hi,
Iwasaki 250w used by reefers are known as MV conversion lamps. They are MH lamps, but they are design to operate on a MV fixture. MV are cheaper because they don't need a capacitor to start. http://www.rpi.edu/dept/union/aquari...ml/DIY_MH.html Iwasaki is more blue when MV ballast is used. - Victor. |