On Sat, 28 Jun 2003 09:18:13 +1000, "Graham Broadbridge" graham at
peachy dot org wrote:

When planted tank people talk watts per gallon we are referring to
fluorescent watts.

What is watts per gallon?

If I have 2 x 100 watt incandescent that is 200 watts.

If I have 2 x 38 watt flourescent tubes that is 76 watts.

The flourescent tubes output much more light in the correct spectrum.
Shouldn't we be measuring the light level at the required wavelength rather
than just measuring the input power required by the illumination source?

Even forgetting the wavelength, surely we should be measuring foot-candles
or lumens rather than watts?


Graham.



Semper Fi!

Visit the forums at Aqua Botanic!
http://aquabotanicwetthumb.infopop.cc/#1

Need Nitrate or Potassium for your tank? Go to www.litemanu.com
(Just a happy customer of the above!)