the only time you really save money is when you go to 3 phase power. its alot cheaper to run halide lights off 277 3 phase than it is to run it off single phase. i have 8 400w halides in my shop that run at least 10 hrs a day plus all the other equipment that i run, and my power bill is only $120 a month.
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a wise man once told me....
" there is no right way to build a reef tank but there is alot of wrong ways to build a reef tank".
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