If you're gonna run any bulbs that are 400 w or more I would suggest using 240 for your lighting. The coolest thing about the 240 power is that you can buy large scale timers and if you have multiple lighting systems in your fishroom(or living room in my case!) they can all run off of the same timer.
Also you gain the benefit of less heat on your ballsts 'cause they don't have to work as hard to generate the charge. 
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90 gal with 55 gal sump dual 250 double ended hqi 14k geisseman, 33 gal prop tank geisseman 150 hqi 14500k,two cpr refugiums,P.M. calcuim reactor,tunze wavebox.
12 gal nano
55 gal freshwater planted/jaguar tank with sump, pc lighting, co2
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