What David said.
Add up the bulb hours (I know, not an actual measure but I use it crudely). 2x10 + 6x4 + 2x2 = 48 hours. If you run a 6 bulb for 8 hours, it is "crudely measured" the same.
Add up the bulb hours (I know, not an actual measure but I use it crudely). 2x10 + 6x4 + 2x2 = 48 hours. If you run a 6 bulb for 8 hours, it is "crudely measured" the same.
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