250's do not come in DE, only SE. The 150's are DE. If you run 250 watt Radiums, you should be using the M80 ballast but most electronics will fire them but will also under drive them, so you will not get the best PAR and color with electronics.
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Jack
No One has ever been seriously injured by using the search function.
Alcohol, Tobacco and Firearms should be a convenience store, not a government agency.
Current Tank Info: Reefing the Pentagon.
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