Yours is a far more energy efficient system than mine. With three MH pendants, a 300cfm cooling fan plus same size exhaust fan, and three relatively large circulation pumps I'm easily sitting around 15 amps for 8 hours during the day and perhaps 10 amps the rest of the time. Only one of my two Neptune power bars monitors amp draw so I have to estimate. 240gal display and 100gal sump/frag tank. There is a heater there too... but I don't think its come on in months.
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