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**To**:**<Aquatic-Plants at actwin_com>****Subject**:**Re: Incandescents****From**:**"Blue Eyes" <djohnson1981 at yahoo_com>**- Date: Wed, 6 Dec 2000 05:24:43 -0800
- References: <200012050848.DAA29424 at actwin_com>

> considering flourescents are 4 or 5 times brighter than > incadescents, the number of incadescent bulbs that would be needed to equal > 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 tank. 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! Derek Johnson djohnson1981 at yahoo_com

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