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Re: light bulb and tannins

> I don't understand this reasoning. When people suggest a certain # of
> watts/gallon they're making the recommendation based on brightness, not
> power consumption. So if these bulbs really do put out the same brightness
> as a 75-Watt bulb, why would you only consider them a 20-Watt bulb for

But the general guidelines that use "watts per gallon" are based on efficient 
forms of lighting like fluorescent and metal halide.   And that
"75w" screw in fluorescent only puts out the equivilent of a 20w fluorescent