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  1. S

    Lighting question

    Sorry , newbie question . If a 13 watt LED floodlight is the equivalent of a 100 watt incandescent , do you count it as 13 or 100 when calculating your watts per gallon ? Or is there some in between calculation ? I wanted to know how many 13/100 watt bulbs I can put over my 180 and stay below...
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