Re: lighting small tanks, watts per gallon rule?

[Erik Olson <erik at thekrib_com>]

On Fri, 12 Mar 1999, Bev wrote:

> Hi all,
> I have a 30 litre = 8 gallon tank, dimensions 46x25x30cm. 
...

> Is there a watts per gallon rule for small tanks, To achive the moderate
> lighting ie. 2 watts per gallon on a 55 gallon, in a small tank, what is
> the rule?

"More". :)
There really isn't a steadfast rule here.  People use the 2-4 wpg for a
starting place, but not everyone ends up there.  If two tubes is not
enough, add a third..

For more data, I refer you to a survey I did last year that showed for
smaller tanks (especially for Amano, whose books provide an entire range
from 1 to hundreds of liters) people tend to go beyond that 2-4wpg rule,
and correspondingly, for larger tanks, not as much is used.
http://www.thekrib.com/Plants/Tech/Lighting/

  - Erik

-- 
Erik Olson
erik at thekrib dot com

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