need advice regarding electronic ballasts for MH


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Manhattan Reefs
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Hi, about 6 years back I had PFO magnetic ballasts, now I am buying a whole new set up and the only ballasts for MH available in my area are coralvue 250watt electronic or sunlight supply galaxy 250watt. I have read these ballasts can interfere with the TV. If this is the case is there a way to shield the ballast to contain the high frequency interference ?