ok I run 500 watts of MH and even during the summer my heater (500 watt) still kick on, during the winter I actually have to add an extra 250 watt heater or my temps will go down.
I am betting "IF" I were to ever switch to LED I would be using more watts in heaters than I am now just on lighting, so LED would actually be more costly to run in my case.
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75 gal. mixed DT, 100 gal. sump, 50 gal. fuge,
Clownfish breeder
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