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> considering flourescents are 4 or 5 times brighter than
> incadescents, the number of incadescent bulbs that would be needed to
> the same amount of light is mind boggling.
> Robert Paul H
Except that incandescents are far more compact a light source than
flourescents. So 2-4wpg flour equals 10-20wpg incandescent. That means
200-400watts over a 20 gallon. Four 100W bulbs will easily fit over the
Halogens are even more effecient than incandescents, so would 'only' need
about 6-12 wpg, so two 75 watt halogen bulbs would light a 20 very well, and
leave the top plenty open as well. Now we just need to work on the light
spectrum issue, and it's the poor-mans metal halide!
djohnson1981 at yahoo_com