NANFA-- My nanometers request answered

Bruce Stallsmith (
Sat, 20 Jan 2001 19:05:18 -0500

Shireen Gonzaga sent me the url below, which is a very comprehensive study
on the relative efficiencies and spectral responses of a list of possible
lighting systems for aquaria. The author, Ivo Busko, explains his analyses
and much of the physics of lighting systems. The best bulb of the ones he
examined is the Phillips ADV850, best in terms of both intensity of light
produced (photons/square mm of plant surface, basically) and quality of
spectrum produced. This is in keeping with his results showing that many
high-end T8 bulbs are often better than T12 bulbs for a variety of reasons
that he goes in to. Many metal halides are hugely inefficient in how much
_usable_ (not total) light they produce. So check it out:

--Bruce Stallsmith
Huntsville, AL

Get your FREE download of MSN Explorer at

/"Unless stated otherwise, comments made on this list do not necessarily
/ reflect the beliefs or goals of the North American Native Fishes
/ Association"
/ This is the discussion list of the North American Native Fishes Association
/ To subscribe, unsubscribe, or get help, send the word
/ subscribe, unsubscribe, or help in the body (not subject) of an email to
/ For a digest version, send the command to
/ instead.
/ For more information about NANFA, visit our web page,