On Fri, 13 Dec 2002 23:24:17 +0800, "alex crouvier"
wrote:

for a relatively small tank like a 20-gallon, you need
7 watt/gallon for high light plants and 3 to 4 watt/gallon
for medium light plants

I'm an advocate of high lighting, but that's wayyy to high. Unless
maybe you are referring to incandescent lights.

20g is a fairly standard size, so the normal 2-3 watts per gallon
would be medium, and 3+ is high lighting.


Chuck Gadd
http://www.csd.net/~cgadd/aqua